72445640

素因数分解:

$2^3\times 5^1\times {\mathrm{1811141}}^1$

素因数の和:1811152

約数の個数: 16

約数和(自身を含む): 163002780

約数和(自身を除く): 90557140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1811141, 3622282, 7244564, 9055705, 14489128, 18111410, 36222820, 72445640]

約数ペア:

[(1, 72445640), (2, 36222820), (4, 18111410), (5, 14489128), (8, 9055705), (10, 7244564), (20, 3622282), (40, 1811141)]