31391620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{120737}}^1$

素因数の和:120759

約数の個数: 24

約数和(自身を含む): 70993944

約数和(自身を除く): 39602324

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 120737, 241474, 482948, 603685, 1207370, 1569581, 2414740, 3139162, 6278324, 7847905, 15695810, 31391620]

約数ペア:

[(1, 31391620), (2, 15695810), (4, 7847905), (5, 6278324), (10, 3139162), (13, 2414740), (20, 1569581), (26, 1207370), (52, 603685), (65, 482948), (130, 241474), (260, 120737)]