1261891960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{4506757}}^1$

素因数の和:4506775

約数の個数: 32

約数和(自身を含む): 3244865760

約数和(自身を除く): 1982973800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 4506757, 9013514, 18027028, 22533785, 31547299, 36054056, 45067570, 63094598, 90135140, 126189196, 157736495, 180270280, 252378392, 315472990, 630945980, 1261891960]

約数ペア:

[(1, 1261891960), (2, 630945980), (4, 315472990), (5, 252378392), (7, 180270280), (8, 157736495), (10, 126189196), (14, 90135140), (20, 63094598), (28, 45067570), (35, 36054056), (40, 31547299), (56, 22533785), (70, 18027028), (140, 9013514), (280, 4506757)]