155625640

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{63781}}^1$

素因数の和:63853

約数の個数: 32

約数和(自身を含む): 355903560

約数和(自身を除く): 200277920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 63781, 127562, 255124, 318905, 510248, 637810, 1275620, 2551240, 3890641, 7781282, 15562564, 19453205, 31125128, 38906410, 77812820, 155625640]

約数ペア:

[(1, 155625640), (2, 77812820), (4, 38906410), (5, 31125128), (8, 19453205), (10, 15562564), (20, 7781282), (40, 3890641), (61, 2551240), (122, 1275620), (244, 637810), (305, 510248), (488, 318905), (610, 255124), (1220, 127562), (2440, 63781)]