21375340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{152681}}^1$

素因数の和:152697

約数の個数: 24

約数和(自身を含む): 51301152

約数和(自身を除く): 29925812

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 152681, 305362, 610724, 763405, 1068767, 1526810, 2137534, 3053620, 4275068, 5343835, 10687670, 21375340]

約数ペア:

[(1, 21375340), (2, 10687670), (4, 5343835), (5, 4275068), (7, 3053620), (10, 2137534), (14, 1526810), (20, 1068767), (28, 763405), (35, 610724), (70, 305362), (140, 152681)]