20406220

素因数分解:

$2^2\times 5^1\times {\mathrm{281}}^1\times {\mathrm{3631}}^1$

素因数の和:3921

約数の個数: 24

約数和(自身を含む): 43017408

約数和(自身を除く): 22611188

約数列:

[1, 2, 4, 5, 10, 20, 281, 562, 1124, 1405, 2810, 3631, 5620, 7262, 14524, 18155, 36310, 72620, 1020311, 2040622, 4081244, 5101555, 10203110, 20406220]

約数ペア:

[(1, 20406220), (2, 10203110), (4, 5101555), (5, 4081244), (10, 2040622), (20, 1020311), (281, 72620), (562, 36310), (1124, 18155), (1405, 14524), (2810, 7262), (3631, 5620)]