21695154

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{278143}}^1$

素因数の和:278161

約数の個数: 16

約数和(自身を含む): 46728192

約数和(自身を除く): 25033038

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 278143, 556286, 834429, 1668858, 3615859, 7231718, 10847577, 21695154]

約数ペア:

[(1, 21695154), (2, 10847577), (3, 7231718), (6, 3615859), (13, 1668858), (26, 834429), (39, 556286), (78, 278143)]