31540340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{121309}}^1$

素因数の和:121331

約数の個数: 24

約数和(自身を含む): 71330280

約数和(自身を除く): 39789940

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 121309, 242618, 485236, 606545, 1213090, 1577017, 2426180, 3154034, 6308068, 7885085, 15770170, 31540340]

約数ペア:

[(1, 31540340), (2, 15770170), (4, 7885085), (5, 6308068), (10, 3154034), (13, 2426180), (20, 1577017), (26, 1213090), (52, 606545), (65, 485236), (130, 242618), (260, 121309)]