21204969

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{3413}}^1$

素因数の和:3544

約数の個数: 16

約数和(自身を含む): 30043200

約数和(自身を除く): 8838231

約数列:

[1, 3, 19, 57, 109, 327, 2071, 3413, 6213, 10239, 64847, 194541, 372017, 1116051, 7068323, 21204969]

約数ペア:

[(1, 21204969), (3, 7068323), (19, 1116051), (57, 372017), (109, 194541), (327, 64847), (2071, 10239), (3413, 6213)]