21564220

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{34781}}^1$

素因数の和:34821

約数の個数: 24

約数和(自身を含む): 46747008

約数和(自身を除く): 25182788

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 34781, 69562, 139124, 173905, 347810, 695620, 1078211, 2156422, 4312844, 5391055, 10782110, 21564220]

約数ペア:

[(1, 21564220), (2, 10782110), (4, 5391055), (5, 4312844), (10, 2156422), (20, 1078211), (31, 695620), (62, 347810), (124, 173905), (155, 139124), (310, 69562), (620, 34781)]