21186820

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{36529}}^1$

素因数の和:36567

約数の個数: 24

約数和(自身を含む): 46027800

約数和(自身を除く): 24840980

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 36529, 73058, 146116, 182645, 365290, 730580, 1059341, 2118682, 4237364, 5296705, 10593410, 21186820]

約数ペア:

[(1, 21186820), (2, 10593410), (4, 5296705), (5, 4237364), (10, 2118682), (20, 1059341), (29, 730580), (58, 365290), (116, 182645), (145, 146116), (290, 73058), (580, 36529)]