398049940

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{686293}}^1$

素因数の和:686331

約数の個数: 24

約数和(自身を含む): 864730440

約数和(自身を除く): 466680500

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 686293, 1372586, 2745172, 3431465, 6862930, 13725860, 19902497, 39804994, 79609988, 99512485, 199024970, 398049940]

約数ペア:

[(1, 398049940), (2, 199024970), (4, 99512485), (5, 79609988), (10, 39804994), (20, 19902497), (29, 13725860), (58, 6862930), (116, 3431465), (145, 2745172), (290, 1372586), (580, 686293)]