645000000

素因数分解:

$2^6\times 3^1\times 5^7\times {\mathrm{43}}^1$

素因数の和:93

約数の個数: 224

約数和(自身を含む): 2182806912

約数和(自身を除く): 1537806912

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 25, 30, 32, 40, 43, 48, 50, 60, 64, 75, 80, 86, 96, 100, 120, 125, 129, 150, 160, 172, 192, 200, 215, 240, 250, 258, 300, 320, 344, 375, 400, 430, 480, 500, 516, 600, 625, 645, 688, 750, 800, 860, 960, 1000, 1032, 1075, 1200, 1250, 1290, 1376, 1500, 1600, 1720, 1875, 2000, 2064, 2150, 2400, 2500, 2580, 2752, 3000, 3125, 3225, 3440, 3750, 4000, 4128, 4300, 4800, 5000, 5160, 5375, 6000, 6250, 6450, 6880, 7500, 8000, 8256, 8600, 9375, 10000, 10320, 10750, 12000, 12500, 12900, 13760, 15000, 15625, 16125, 17200, 18750, 20000, 20640, 21500, 24000, 25000, 25800, 26875, 30000, 31250, 32250, 34400, 37500, 40000, 41280, 43000, 46875, 50000, 51600, 53750, 60000, 62500, 64500, 68800, 75000, 78125, 80625, 86000, 93750, 100000, 103200, 107500, 120000, 125000, 129000, 134375, 150000, 156250, 161250, 172000, 187500, 200000, 206400, 215000, 234375, 250000, 258000, 268750, 300000, 312500, 322500, 344000, 375000, 403125, 430000, 468750, 500000, 516000, 537500, 600000, 625000, 645000, 671875, 750000, 806250, 860000, 937500, 1000000, 1032000, 1075000, 1250000, 1290000, 1343750, 1500000, 1612500, 1720000, 1875000, 2015625, 2150000, 2500000, 2580000, 2687500, 3000000, 3225000, 3359375, 3750000, 4031250, 4300000, 5000000, 5160000, 5375000, 6450000, 6718750, 7500000, 8062500, 8600000, 10078125, 10750000, 12900000, 13437500, 15000000, 16125000, 20156250, 21500000, 25800000, 26875000, 32250000, 40312500, 43000000, 53750000, 64500000, 80625000, 107500000, 129000000, 161250000, 215000000, 322500000, 645000000]

約数ペア:

[(1, 645000000), (2, 322500000), (3, 215000000), (4, 161250000), (5, 129000000), (6, 107500000), (8, 80625000), (10, 64500000), (12, 53750000), (15, 43000000), (16, 40312500), (20, 32250000), (24, 26875000), (25, 25800000), (30, 21500000), (32, 20156250), (40, 16125000), (43, 15000000), (48, 13437500), (50, 12900000), (60, 10750000), (64, 10078125), (75, 8600000), (80, 8062500), (86, 7500000), (96, 6718750), (100, 6450000), (120, 5375000), (125, 5160000), (129, 5000000), (150, 4300000), (160, 4031250), (172, 3750000), (192, 3359375), (200, 3225000), (215, 3000000), (240, 2687500), (250, 2580000), (258, 2500000), (300, 2150000), (320, 2015625), (344, 1875000), (375, 1720000), (400, 1612500), (430, 1500000), (480, 1343750), (500, 1290000), (516, 1250000), (600, 1075000), (625, 1032000), (645, 1000000), (688, 937500), (750, 860000), (800, 806250), (860, 750000), (960, 671875), (1000, 645000), (1032, 625000), (1075, 600000), (1200, 537500), (1250, 516000), (1290, 500000), (1376, 468750), (1500, 430000), (1600, 403125), (1720, 375000), (1875, 344000), (2000, 322500), (2064, 312500), (2150, 300000), (2400, 268750), (2500, 258000), (2580, 250000), (2752, 234375), (3000, 215000), (3125, 206400), (3225, 200000), (3440, 187500), (3750, 172000), (4000, 161250), (4128, 156250), (4300, 150000), (4800, 134375), (5000, 129000), (5160, 125000), (5375, 120000), (6000, 107500), (6250, 103200), (6450, 100000), (6880, 93750), (7500, 86000), (8000, 80625), (8256, 78125), (8600, 75000), (9375, 68800), (10000, 64500), (10320, 62500), (10750, 60000), (12000, 53750), (12500, 51600), (12900, 50000), (13760, 46875), (15000, 43000), (15625, 41280), (16125, 40000), (17200, 37500), (18750, 34400), (20000, 32250), (20640, 31250), (21500, 30000), (24000, 26875), (25000, 25800)]