19999774

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1\times {\mathrm{1979}}^1$

素因数の和:2175

約数の個数: 16

約数和(自身を含む): 31173120

約数和(自身を除く): 11173346

約数列:

[1, 2, 31, 62, 163, 326, 1979, 3958, 5053, 10106, 61349, 122698, 322577, 645154, 9999887, 19999774]

約数ペア:

[(1, 19999774), (2, 9999887), (31, 645154), (62, 322577), (163, 122698), (326, 61349), (1979, 10106), (3958, 5053)]