20180840

素因数分解:

$2^3\times 5^1\times {\mathrm{504521}}^1$

素因数の和:504532

約数の個数: 16

約数和(自身を含む): 45406980

約数和(自身を除く): 25226140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 504521, 1009042, 2018084, 2522605, 4036168, 5045210, 10090420, 20180840]

約数ペア:

[(1, 20180840), (2, 10090420), (4, 5045210), (5, 4036168), (8, 2522605), (10, 2018084), (20, 1009042), (40, 504521)]