21117016

素因数分解:

$2^3\times {\mathrm{79}}^1\times {\mathrm{33413}}^1$

素因数の和:33498

約数の個数: 16

約数和(自身を含む): 40096800

約数和(自身を除く): 18979784

約数列:

[1, 2, 4, 8, 79, 158, 316, 632, 33413, 66826, 133652, 267304, 2639627, 5279254, 10558508, 21117016]

約数ペア:

[(1, 21117016), (2, 10558508), (4, 5279254), (8, 2639627), (79, 267304), (158, 133652), (316, 66826), (632, 33413)]