20145640

素因数分解:

$2^3\times 5^1\times {\mathrm{113}}^1\times {\mathrm{4457}}^1$

素因数の和:4581

約数の個数: 32

約数和(自身を含む): 45739080

約数和(自身を除く): 25593440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 113, 226, 452, 565, 904, 1130, 2260, 4457, 4520, 8914, 17828, 22285, 35656, 44570, 89140, 178280, 503641, 1007282, 2014564, 2518205, 4029128, 5036410, 10072820, 20145640]

約数ペア:

[(1, 20145640), (2, 10072820), (4, 5036410), (5, 4029128), (8, 2518205), (10, 2014564), (20, 1007282), (40, 503641), (113, 178280), (226, 89140), (452, 44570), (565, 35656), (904, 22285), (1130, 17828), (2260, 8914), (4457, 4520)]