18256220

素因数分解:

$2^2\times 5^1\times {\mathrm{691}}^1\times {\mathrm{1321}}^1$

素因数の和:2021

約数の個数: 24

約数和(自身を含む): 38422608

約数和(自身を除く): 20166388

約数列:

[1, 2, 4, 5, 10, 20, 691, 1321, 1382, 2642, 2764, 3455, 5284, 6605, 6910, 13210, 13820, 26420, 912811, 1825622, 3651244, 4564055, 9128110, 18256220]

約数ペア:

[(1, 18256220), (2, 9128110), (4, 4564055), (5, 3651244), (10, 1825622), (20, 912811), (691, 26420), (1321, 13820), (1382, 13210), (2642, 6910), (2764, 6605), (3455, 5284)]