20212840

素因数分解:

$2^3\times 5^1\times {\mathrm{505321}}^1$

素因数の和:505332

約数の個数: 16

約数和(自身を含む): 45478980

約数和(自身を除く): 25266140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 505321, 1010642, 2021284, 2526605, 4042568, 5053210, 10106420, 20212840]

約数ペア:

[(1, 20212840), (2, 10106420), (4, 5053210), (5, 4042568), (8, 2526605), (10, 2021284), (20, 1010642), (40, 505321)]