21080530

素因数分解:

$2^1\times 5^1\times {\mathrm{1013}}^1\times {\mathrm{2081}}^1$

素因数の和:3101

約数の個数: 16

約数和(自身を含む): 38000664

約数和(自身を除く): 16920134

約数列:

[1, 2, 5, 10, 1013, 2026, 2081, 4162, 5065, 10130, 10405, 20810, 2108053, 4216106, 10540265, 21080530]

約数ペア:

[(1, 21080530), (2, 10540265), (5, 4216106), (10, 2108053), (1013, 20810), (2026, 10405), (2081, 10130), (4162, 5065)]