2100000000

素因数分解:

$2^8\times 3^1\times 5^8\times 7^1$

素因数の和:66

約数の個数: 324

約数和(自身を含む): 7984370912

約数和(自身を除く): 5884370912

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 25, 28, 30, 32, 35, 40, 42, 48, 50, 56, 60, 64, 70, 75, 80, 84, 96, 100, 105, 112, 120, 125, 128, 140, 150, 160, 168, 175, 192, 200, 210, 224, 240, 250, 256, 280, 300, 320, 336, 350, 375, 384, 400, 420, 448, 480, 500, 525, 560, 600, 625, 640, 672, 700, 750, 768, 800, 840, 875, 896, 960, 1000, 1050, 1120, 1200, 1250, 1280, 1344, 1400, 1500, 1600, 1680, 1750, 1792, 1875, 1920, 2000, 2100, 2240, 2400, 2500, 2625, 2688, 2800, 3000, 3125, 3200, 3360, 3500, 3750, 3840, 4000, 4200, 4375, 4480, 4800, 5000, 5250, 5376, 5600, 6000, 6250, 6400, 6720, 7000, 7500, 8000, 8400, 8750, 8960, 9375, 9600, 10000, 10500, 11200, 12000, 12500, 13125, 13440, 14000, 15000, 15625, 16000, 16800, 17500, 18750, 19200, 20000, 21000, 21875, 22400, 24000, 25000, 26250, 26880, 28000, 30000, 31250, 32000, 33600, 35000, 37500, 40000, 42000, 43750, 44800, 46875, 48000, 50000, 52500, 56000, 60000, 62500, 65625, 67200, 70000, 75000, 78125, 80000, 84000, 87500, 93750, 96000, 100000, 105000, 109375, 112000, 120000, 125000, 131250, 134400, 140000, 150000, 156250, 160000, 168000, 175000, 187500, 200000, 210000, 218750, 224000, 234375, 240000, 250000, 262500, 280000, 300000, 312500, 328125, 336000, 350000, 375000, 390625, 400000, 420000, 437500, 468750, 480000, 500000, 525000, 546875, 560000, 600000, 625000, 656250, 672000, 700000, 750000, 781250, 800000, 840000, 875000, 937500, 1000000, 1050000, 1093750, 1120000, 1171875, 1200000, 1250000, 1312500, 1400000, 1500000, 1562500, 1640625, 1680000, 1750000, 1875000, 2000000, 2100000, 2187500, 2343750, 2400000, 2500000, 2625000, 2734375, 2800000, 3000000, 3125000, 3281250, 3360000, 3500000, 3750000, 4000000, 4200000, 4375000, 4687500, 5000000, 5250000, 5468750, 5600000, 6000000, 6250000, 6562500, 7000000, 7500000, 8203125, 8400000, 8750000, 9375000, 10000000, 10500000, 10937500, 12000000, 12500000, 13125000, 14000000, 15000000, 16406250, 16800000, 17500000, 18750000, 20000000, 21000000, 21875000, 25000000, 26250000, 28000000, 30000000, 32812500, 35000000, 37500000, 42000000, 43750000, 50000000, 52500000, 60000000, 65625000, 70000000, 75000000, 84000000, 87500000, 100000000, 105000000, 131250000, 140000000, 150000000, 175000000, 210000000, 262500000, 300000000, 350000000, 420000000, 525000000, 700000000, 1050000000, 2100000000]

約数ペア:

[(1, 2100000000), (2, 1050000000), (3, 700000000), (4, 525000000), (5, 420000000), (6, 350000000), (7, 300000000), (8, 262500000), (10, 210000000), (12, 175000000), (14, 150000000), (15, 140000000), (16, 131250000), (20, 105000000), (21, 100000000), (24, 87500000), (25, 84000000), (28, 75000000), (30, 70000000), (32, 65625000), (35, 60000000), (40, 52500000), (42, 50000000), (48, 43750000), (50, 42000000), (56, 37500000), (60, 35000000), (64, 32812500), (70, 30000000), (75, 28000000), (80, 26250000), (84, 25000000), (96, 21875000), (100, 21000000), (105, 20000000), (112, 18750000), (120, 17500000), (125, 16800000), (128, 16406250), (140, 15000000), (150, 14000000), (160, 13125000), (168, 12500000), (175, 12000000), (192, 10937500), (200, 10500000), (210, 10000000), (224, 9375000), (240, 8750000), (250, 8400000), (256, 8203125), (280, 7500000), (300, 7000000), (320, 6562500), (336, 6250000), (350, 6000000), (375, 5600000), (384, 5468750), (400, 5250000), (420, 5000000), (448, 4687500), (480, 4375000), (500, 4200000), (525, 4000000), (560, 3750000), (600, 3500000), (625, 3360000), (640, 3281250), (672, 3125000), (700, 3000000), (750, 2800000), (768, 2734375), (800, 2625000), (840, 2500000), (875, 2400000), (896, 2343750), (960, 2187500), (1000, 2100000), (1050, 2000000), (1120, 1875000), (1200, 1750000), (1250, 1680000), (1280, 1640625), (1344, 1562500), (1400, 1500000), (1500, 1400000), (1600, 1312500), (1680, 1250000), (1750, 1200000), (1792, 1171875), (1875, 1120000), (1920, 1093750), (2000, 1050000), (2100, 1000000), (2240, 937500), (2400, 875000), (2500, 840000), (2625, 800000), (2688, 781250), (2800, 750000), (3000, 700000), (3125, 672000), (3200, 656250), (3360, 625000), (3500, 600000), (3750, 560000), (3840, 546875), (4000, 525000), (4200, 500000), (4375, 480000), (4480, 468750), (4800, 437500), (5000, 420000), (5250, 400000), (5376, 390625), (5600, 375000), (6000, 350000), (6250, 336000), (6400, 328125), (6720, 312500), (7000, 300000), (7500, 280000), (8000, 262500), (8400, 250000), (8750, 240000), (8960, 234375), (9375, 224000), (9600, 218750), (10000, 210000), (10500, 200000), (11200, 187500), (12000, 175000), (12500, 168000), (13125, 160000), (13440, 156250), (14000, 150000), (15000, 140000), (15625, 134400), (16000, 131250), (16800, 125000), (17500, 120000), (18750, 112000), (19200, 109375), (20000, 105000), (21000, 100000), (21875, 96000), (22400, 93750), (24000, 87500), (25000, 84000), (26250, 80000), (26880, 78125), (28000, 75000), (30000, 70000), (31250, 67200), (32000, 65625), (33600, 62500), (35000, 60000), (37500, 56000), (40000, 52500), (42000, 50000), (43750, 48000), (44800, 46875)]