20873740

素因数分解:

$2^2\times 5^1\times {\mathrm{389}}^1\times {\mathrm{2683}}^1$

素因数の和:3081

約数の個数: 24

約数和(自身を含む): 43963920

約数和(自身を除く): 23090180

約数列:

[1, 2, 4, 5, 10, 20, 389, 778, 1556, 1945, 2683, 3890, 5366, 7780, 10732, 13415, 26830, 53660, 1043687, 2087374, 4174748, 5218435, 10436870, 20873740]

約数ペア:

[(1, 20873740), (2, 10436870), (4, 5218435), (5, 4174748), (10, 2087374), (20, 1043687), (389, 53660), (778, 26830), (1556, 13415), (1945, 10732), (2683, 7780), (3890, 5366)]