31509140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{121189}}^1$

素因数の和:121211

約数の個数: 24

約数和(自身を含む): 71259720

約数和(自身を除く): 39750580

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 121189, 242378, 484756, 605945, 1211890, 1575457, 2423780, 3150914, 6301828, 7877285, 15754570, 31509140]

約数ペア:

[(1, 31509140), (2, 15754570), (4, 7877285), (5, 6301828), (10, 3150914), (13, 2423780), (20, 1575457), (26, 1211890), (52, 605945), (65, 484756), (130, 242378), (260, 121189)]