1200000000

素因数分解:

$2^{10}\times 3^1\times 5^8$

素因数の和:63

約数の個数: 198

約数和(自身を含む): 3998044828

約数和(自身を除く): 2798044828

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 25, 30, 32, 40, 48, 50, 60, 64, 75, 80, 96, 100, 120, 125, 128, 150, 160, 192, 200, 240, 250, 256, 300, 320, 375, 384, 400, 480, 500, 512, 600, 625, 640, 750, 768, 800, 960, 1000, 1024, 1200, 1250, 1280, 1500, 1536, 1600, 1875, 1920, 2000, 2400, 2500, 2560, 3000, 3072, 3125, 3200, 3750, 3840, 4000, 4800, 5000, 5120, 6000, 6250, 6400, 7500, 7680, 8000, 9375, 9600, 10000, 12000, 12500, 12800, 15000, 15360, 15625, 16000, 18750, 19200, 20000, 24000, 25000, 25600, 30000, 31250, 32000, 37500, 38400, 40000, 46875, 48000, 50000, 60000, 62500, 64000, 75000, 76800, 78125, 80000, 93750, 96000, 100000, 120000, 125000, 128000, 150000, 156250, 160000, 187500, 192000, 200000, 234375, 240000, 250000, 300000, 312500, 320000, 375000, 384000, 390625, 400000, 468750, 480000, 500000, 600000, 625000, 640000, 750000, 781250, 800000, 937500, 960000, 1000000, 1171875, 1200000, 1250000, 1500000, 1562500, 1600000, 1875000, 1920000, 2000000, 2343750, 2400000, 2500000, 3000000, 3125000, 3200000, 3750000, 4000000, 4687500, 4800000, 5000000, 6000000, 6250000, 7500000, 8000000, 9375000, 9600000, 10000000, 12000000, 12500000, 15000000, 16000000, 18750000, 20000000, 24000000, 25000000, 30000000, 37500000, 40000000, 48000000, 50000000, 60000000, 75000000, 80000000, 100000000, 120000000, 150000000, 200000000, 240000000, 300000000, 400000000, 600000000, 1200000000]

約数ペア:

[(1, 1200000000), (2, 600000000), (3, 400000000), (4, 300000000), (5, 240000000), (6, 200000000), (8, 150000000), (10, 120000000), (12, 100000000), (15, 80000000), (16, 75000000), (20, 60000000), (24, 50000000), (25, 48000000), (30, 40000000), (32, 37500000), (40, 30000000), (48, 25000000), (50, 24000000), (60, 20000000), (64, 18750000), (75, 16000000), (80, 15000000), (96, 12500000), (100, 12000000), (120, 10000000), (125, 9600000), (128, 9375000), (150, 8000000), (160, 7500000), (192, 6250000), (200, 6000000), (240, 5000000), (250, 4800000), (256, 4687500), (300, 4000000), (320, 3750000), (375, 3200000), (384, 3125000), (400, 3000000), (480, 2500000), (500, 2400000), (512, 2343750), (600, 2000000), (625, 1920000), (640, 1875000), (750, 1600000), (768, 1562500), (800, 1500000), (960, 1250000), (1000, 1200000), (1024, 1171875), (1200, 1000000), (1250, 960000), (1280, 937500), (1500, 800000), (1536, 781250), (1600, 750000), (1875, 640000), (1920, 625000), (2000, 600000), (2400, 500000), (2500, 480000), (2560, 468750), (3000, 400000), (3072, 390625), (3125, 384000), (3200, 375000), (3750, 320000), (3840, 312500), (4000, 300000), (4800, 250000), (5000, 240000), (5120, 234375), (6000, 200000), (6250, 192000), (6400, 187500), (7500, 160000), (7680, 156250), (8000, 150000), (9375, 128000), (9600, 125000), (10000, 120000), (12000, 100000), (12500, 96000), (12800, 93750), (15000, 80000), (15360, 78125), (15625, 76800), (16000, 75000), (18750, 64000), (19200, 62500), (20000, 60000), (24000, 50000), (25000, 48000), (25600, 46875), (30000, 40000), (31250, 38400), (32000, 37500)]