205587640

素因数分解:

$2^3\times 5^1\times {\mathrm{5139691}}^1$

素因数の和:5139702

約数の個数: 16

約数和(自身を含む): 462572280

約数和(自身を除く): 256984640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 5139691, 10279382, 20558764, 25698455, 41117528, 51396910, 102793820, 205587640]

約数ペア:

[(1, 205587640), (2, 102793820), (4, 51396910), (5, 41117528), (8, 25698455), (10, 20558764), (20, 10279382), (40, 5139691)]