12678220

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{21859}}^1$

素因数の和:21897

約数の個数: 24

約数和(自身を含む): 27543600

約数和(自身を除く): 14865380

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 21859, 43718, 87436, 109295, 218590, 437180, 633911, 1267822, 2535644, 3169555, 6339110, 12678220]

約数ペア:

[(1, 12678220), (2, 6339110), (4, 3169555), (5, 2535644), (10, 1267822), (20, 633911), (29, 437180), (58, 218590), (116, 109295), (145, 87436), (290, 43718), (580, 21859)]