20408965172

素因数分解:

$2^2\times {\mathrm{2351}}^1\times {\mathrm{2170243}}^1$

素因数の和:2172598

約数の個数: 12

約数和(自身を含む): 35730897216

約数和(自身を除く): 15321932044

約数列:

[1, 2, 4, 2351, 4702, 9404, 2170243, 4340486, 8680972, 5102241293, 10204482586, 20408965172]

約数ペア:

[(1, 20408965172), (2, 10204482586), (4, 5102241293), (2351, 8680972), (4702, 4340486), (9404, 2170243)]