21216747

素因数分解:

$3^1\times {\mathrm{127}}^1\times {\mathrm{233}}^1\times {\mathrm{239}}^1$

素因数の和:602

約数の個数: 16

約数和(自身を含む): 28753920

約数和(自身を除く): 7537173

約数列:

[1, 3, 127, 233, 239, 381, 699, 717, 29591, 30353, 55687, 88773, 91059, 167061, 7072249, 21216747]

約数ペア:

[(1, 21216747), (3, 7072249), (127, 167061), (233, 91059), (239, 88773), (381, 55687), (699, 30353), (717, 29591)]