20316980

素因数分解:

$2^2\times 5^1\times {\mathrm{769}}^1\times {\mathrm{1321}}^1$

素因数の和:2099

約数の個数: 24

約数和(自身を含む): 42753480

約数和(自身を除く): 22436500

約数列:

[1, 2, 4, 5, 10, 20, 769, 1321, 1538, 2642, 3076, 3845, 5284, 6605, 7690, 13210, 15380, 26420, 1015849, 2031698, 4063396, 5079245, 10158490, 20316980]

約数ペア:

[(1, 20316980), (2, 10158490), (4, 5079245), (5, 4063396), (10, 2031698), (20, 1015849), (769, 26420), (1321, 15380), (1538, 13210), (2642, 7690), (3076, 6605), (3845, 5284)]