21662555

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{251}}^1\times {\mathrm{421}}^1$

素因数の和:718

約数の個数: 16

約数和(自身を含む): 26798688

約数和(自身を除く): 5136133

約数列:

[1, 5, 41, 205, 251, 421, 1255, 2105, 10291, 17261, 51455, 86305, 105671, 528355, 4332511, 21662555]

約数ペア:

[(1, 21662555), (5, 4332511), (41, 528355), (205, 105671), (251, 86305), (421, 51455), (1255, 17261), (2105, 10291)]