21977945

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{9293}}^1$

素因数の和:9352

約数の個数: 16

約数和(自身を含む): 29443392

約数和(自身を除く): 7465447

約数列:

[1, 5, 11, 43, 55, 215, 473, 2365, 9293, 46465, 102223, 399599, 511115, 1997995, 4395589, 21977945]

約数ペア:

[(1, 21977945), (5, 4395589), (11, 1997995), (43, 511115), (55, 399599), (215, 102223), (473, 46465), (2365, 9293)]