210000000

素因数分解:

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

素因数の和:59

約数の個数: 256

約数和(自身を含む): 796872960

約数和(自身を除く): 586872960

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, 280, 300, 320, 336, 350, 375, 384, 400, 420, 448, 480, 500, 525, 560, 600, 625, 640, 672, 700, 750, 800, 840, 875, 896, 960, 1000, 1050, 1120, 1200, 1250, 1344, 1400, 1500, 1600, 1680, 1750, 1875, 1920, 2000, 2100, 2240, 2400, 2500, 2625, 2688, 2800, 3000, 3125, 3200, 3360, 3500, 3750, 4000, 4200, 4375, 4480, 4800, 5000, 5250, 5600, 6000, 6250, 6720, 7000, 7500, 8000, 8400, 8750, 9375, 9600, 10000, 10500, 11200, 12000, 12500, 13125, 13440, 14000, 15000, 15625, 16000, 16800, 17500, 18750, 20000, 21000, 21875, 22400, 24000, 25000, 26250, 28000, 30000, 31250, 33600, 35000, 37500, 40000, 42000, 43750, 46875, 48000, 50000, 52500, 56000, 60000, 62500, 65625, 67200, 70000, 75000, 78125, 80000, 84000, 87500, 93750, 100000, 105000, 109375, 112000, 120000, 125000, 131250, 140000, 150000, 156250, 168000, 175000, 187500, 200000, 210000, 218750, 234375, 240000, 250000, 262500, 280000, 300000, 312500, 328125, 336000, 350000, 375000, 400000, 420000, 437500, 468750, 500000, 525000, 546875, 560000, 600000, 625000, 656250, 700000, 750000, 840000, 875000, 937500, 1000000, 1050000, 1093750, 1200000, 1250000, 1312500, 1400000, 1500000, 1640625, 1680000, 1750000, 1875000, 2000000, 2100000, 2187500, 2500000, 2625000, 2800000, 3000000, 3281250, 3500000, 3750000, 4200000, 4375000, 5000000, 5250000, 6000000, 6562500, 7000000, 7500000, 8400000, 8750000, 10000000, 10500000, 13125000, 14000000, 15000000, 17500000, 21000000, 26250000, 30000000, 35000000, 42000000, 52500000, 70000000, 105000000, 210000000]

約数ペア:

[(1, 210000000), (2, 105000000), (3, 70000000), (4, 52500000), (5, 42000000), (6, 35000000), (7, 30000000), (8, 26250000), (10, 21000000), (12, 17500000), (14, 15000000), (15, 14000000), (16, 13125000), (20, 10500000), (21, 10000000), (24, 8750000), (25, 8400000), (28, 7500000), (30, 7000000), (32, 6562500), (35, 6000000), (40, 5250000), (42, 5000000), (48, 4375000), (50, 4200000), (56, 3750000), (60, 3500000), (64, 3281250), (70, 3000000), (75, 2800000), (80, 2625000), (84, 2500000), (96, 2187500), (100, 2100000), (105, 2000000), (112, 1875000), (120, 1750000), (125, 1680000), (128, 1640625), (140, 1500000), (150, 1400000), (160, 1312500), (168, 1250000), (175, 1200000), (192, 1093750), (200, 1050000), (210, 1000000), (224, 937500), (240, 875000), (250, 840000), (280, 750000), (300, 700000), (320, 656250), (336, 625000), (350, 600000), (375, 560000), (384, 546875), (400, 525000), (420, 500000), (448, 468750), (480, 437500), (500, 420000), (525, 400000), (560, 375000), (600, 350000), (625, 336000), (640, 328125), (672, 312500), (700, 300000), (750, 280000), (800, 262500), (840, 250000), (875, 240000), (896, 234375), (960, 218750), (1000, 210000), (1050, 200000), (1120, 187500), (1200, 175000), (1250, 168000), (1344, 156250), (1400, 150000), (1500, 140000), (1600, 131250), (1680, 125000), (1750, 120000), (1875, 112000), (1920, 109375), (2000, 105000), (2100, 100000), (2240, 93750), (2400, 87500), (2500, 84000), (2625, 80000), (2688, 78125), (2800, 75000), (3000, 70000), (3125, 67200), (3200, 65625), (3360, 62500), (3500, 60000), (3750, 56000), (4000, 52500), (4200, 50000), (4375, 48000), (4480, 46875), (4800, 43750), (5000, 42000), (5250, 40000), (5600, 37500), (6000, 35000), (6250, 33600), (6720, 31250), (7000, 30000), (7500, 28000), (8000, 26250), (8400, 25000), (8750, 24000), (9375, 22400), (9600, 21875), (10000, 21000), (10500, 20000), (11200, 18750), (12000, 17500), (12500, 16800), (13125, 16000), (13440, 15625), (14000, 15000)]