31251280

素因数分解:

$2^4\times 5^1\times {\mathrm{113}}^1\times {\mathrm{3457}}^1$

素因数の和:3583

約数の個数: 40

約数和(自身を含む): 73323432

約数和(自身を除く): 42072152

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 113, 226, 452, 565, 904, 1130, 1808, 2260, 3457, 4520, 6914, 9040, 13828, 17285, 27656, 34570, 55312, 69140, 138280, 276560, 390641, 781282, 1562564, 1953205, 3125128, 3906410, 6250256, 7812820, 15625640, 31251280]

約数ペア:

[(1, 31251280), (2, 15625640), (4, 7812820), (5, 6250256), (8, 3906410), (10, 3125128), (16, 1953205), (20, 1562564), (40, 781282), (80, 390641), (113, 276560), (226, 138280), (452, 69140), (565, 55312), (904, 34570), (1130, 27656), (1808, 17285), (2260, 13828), (3457, 9040), (4520, 6914)]