21250185

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{4441}}^1$

素因数の和:4489

約数の個数: 32

約数和(自身を含む): 38378880

約数和(自身を除く): 17128695

約数列:

[1, 3, 5, 11, 15, 29, 33, 55, 87, 145, 165, 319, 435, 957, 1595, 4441, 4785, 13323, 22205, 48851, 66615, 128789, 146553, 244255, 386367, 643945, 732765, 1416679, 1931835, 4250037, 7083395, 21250185]

約数ペア:

[(1, 21250185), (3, 7083395), (5, 4250037), (11, 1931835), (15, 1416679), (29, 732765), (33, 643945), (55, 386367), (87, 244255), (145, 146553), (165, 128789), (319, 66615), (435, 48851), (957, 22205), (1595, 13323), (4441, 4785)]