319946980

素因数分解:

$2^2\times 5^1\times {\mathrm{787}}^1\times {\mathrm{20327}}^1$

素因数の和:21123

約数の個数: 24

約数和(自身を含む): 672775488

約数和(自身を除く): 352828508

約数列:

[1, 2, 4, 5, 10, 20, 787, 1574, 3148, 3935, 7870, 15740, 20327, 40654, 81308, 101635, 203270, 406540, 15997349, 31994698, 63989396, 79986745, 159973490, 319946980]

約数ペア:

[(1, 319946980), (2, 159973490), (4, 79986745), (5, 63989396), (10, 31994698), (20, 15997349), (787, 406540), (1574, 203270), (3148, 101635), (3935, 81308), (7870, 40654), (15740, 20327)]