31905640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61357}}^1$

素因数の和:61381

約数の個数: 32

約数和(自身を含む): 77311080

約数和(自身を除く): 45405440

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 61357, 122714, 245428, 306785, 490856, 613570, 797641, 1227140, 1595282, 2454280, 3190564, 3988205, 6381128, 7976410, 15952820, 31905640]

約数ペア:

[(1, 31905640), (2, 15952820), (4, 7976410), (5, 6381128), (8, 3988205), (10, 3190564), (13, 2454280), (20, 1595282), (26, 1227140), (40, 797641), (52, 613570), (65, 490856), (104, 306785), (130, 245428), (260, 122714), (520, 61357)]