20792540

素因数分解:

$2^2\times 5^1\times {\mathrm{787}}^1\times {\mathrm{1321}}^1$

素因数の和:2117

約数の個数: 24

約数和(自身を含む): 43752912

約数和(自身を除く): 22960372

約数列:

[1, 2, 4, 5, 10, 20, 787, 1321, 1574, 2642, 3148, 3935, 5284, 6605, 7870, 13210, 15740, 26420, 1039627, 2079254, 4158508, 5198135, 10396270, 20792540]

約数ペア:

[(1, 20792540), (2, 10396270), (4, 5198135), (5, 4158508), (10, 2079254), (20, 1039627), (787, 26420), (1321, 15740), (1574, 13210), (2642, 7870), (3148, 6605), (3935, 5284)]