21207080

素因数分解:

$2^3\times 5^1\times {\mathrm{530177}}^1$

素因数の和:530188

約数の個数: 16

約数和(自身を含む): 47716020

約数和(自身を除く): 26508940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 530177, 1060354, 2120708, 2650885, 4241416, 5301770, 10603540, 21207080]

約数ペア:

[(1, 21207080), (2, 10603540), (4, 5301770), (5, 4241416), (8, 2650885), (10, 2120708), (20, 1060354), (40, 530177)]