15625640

素因数分解:

$2^3\times 5^1\times {\mathrm{113}}^1\times {\mathrm{3457}}^1$

素因数の和:3581

約数の個数: 32

約数和(自身を含む): 35479080

約数和(自身を除く): 19853440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 113, 226, 452, 565, 904, 1130, 2260, 3457, 4520, 6914, 13828, 17285, 27656, 34570, 69140, 138280, 390641, 781282, 1562564, 1953205, 3125128, 3906410, 7812820, 15625640]

約数ペア:

[(1, 15625640), (2, 7812820), (4, 3906410), (5, 3125128), (8, 1953205), (10, 1562564), (20, 781282), (40, 390641), (113, 138280), (226, 69140), (452, 34570), (565, 27656), (904, 17285), (1130, 13828), (2260, 6914), (3457, 4520)]