20642156

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{2729}}^1$

素因数の和:2825

約数の個数: 24

約数和(自身を含む): 37914240

約数和(自身を除く): 17272084

約数列:

[1, 2, 4, 31, 61, 62, 122, 124, 244, 1891, 2729, 3782, 5458, 7564, 10916, 84599, 166469, 169198, 332938, 338396, 665876, 5160539, 10321078, 20642156]

約数ペア:

[(1, 20642156), (2, 10321078), (4, 5160539), (31, 665876), (61, 338396), (62, 332938), (122, 169198), (124, 166469), (244, 84599), (1891, 10916), (2729, 7564), (3782, 5458)]