21074590

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{72671}}^1$

素因数の和:72707

約数の個数: 16

約数和(自身を含む): 39242880

約数和(自身を除く): 18168290

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 72671, 145342, 363355, 726710, 2107459, 4214918, 10537295, 21074590]

約数ペア:

[(1, 21074590), (2, 10537295), (5, 4214918), (10, 2107459), (29, 726710), (58, 363355), (145, 145342), (290, 72671)]