20041282180

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{211}}^1\times {\mathrm{66889}}^1$

素因数の和:67180

約数の個数: 48

約数和(自身を含む): 42882376320

約数和(自身を除く): 22841094140

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 211, 284, 355, 422, 710, 844, 1055, 1420, 2110, 4220, 14981, 29962, 59924, 66889, 74905, 133778, 149810, 267556, 299620, 334445, 668890, 1337780, 4749119, 9498238, 14113579, 18996476, 23745595, 28227158, 47491190, 56454316, 70567895, 94982380, 141135790, 282271580, 1002064109, 2004128218, 4008256436, 5010320545, 10020641090, 20041282180]

約数ペア:

[(1, 20041282180), (2, 10020641090), (4, 5010320545), (5, 4008256436), (10, 2004128218), (20, 1002064109), (71, 282271580), (142, 141135790), (211, 94982380), (284, 70567895), (355, 56454316), (422, 47491190), (710, 28227158), (844, 23745595), (1055, 18996476), (1420, 14113579), (2110, 9498238), (4220, 4749119), (14981, 1337780), (29962, 668890), (59924, 334445), (66889, 299620), (74905, 267556), (133778, 149810)]