21658270

素因数分解:

$2^1\times 5^1\times {\mathrm{443}}^1\times {\mathrm{4889}}^1$

素因数の和:5339

約数の個数: 16

約数和(自身を含む): 39080880

約数和(自身を除く): 17422610

約数列:

[1, 2, 5, 10, 443, 886, 2215, 4430, 4889, 9778, 24445, 48890, 2165827, 4331654, 10829135, 21658270]

約数ペア:

[(1, 21658270), (2, 10829135), (5, 4331654), (10, 2165827), (443, 48890), (886, 24445), (2215, 9778), (4430, 4889)]