20402770

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{1471}}^1$

素因数の和:1570

約数の個数: 32

約数和(自身を含む): 39214080

約数和(自身を除く): 18811310

約数列:

[1, 2, 5, 10, 19, 38, 73, 95, 146, 190, 365, 730, 1387, 1471, 2774, 2942, 6935, 7355, 13870, 14710, 27949, 55898, 107383, 139745, 214766, 279490, 536915, 1073830, 2040277, 4080554, 10201385, 20402770]

約数ペア:

[(1, 20402770), (2, 10201385), (5, 4080554), (10, 2040277), (19, 1073830), (38, 536915), (73, 279490), (95, 214766), (146, 139745), (190, 107383), (365, 55898), (730, 27949), (1387, 14710), (1471, 13870), (2774, 7355), (2942, 6935)]