72225640

素因数分解:

$2^3\times 5^1\times {\mathrm{1805641}}^1$

素因数の和:1805652

約数の個数: 16

約数和(自身を含む): 162507780

約数和(自身を除く): 90282140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1805641, 3611282, 7222564, 9028205, 14445128, 18056410, 36112820, 72225640]

約数ペア:

[(1, 72225640), (2, 36112820), (4, 18056410), (5, 14445128), (8, 9028205), (10, 7222564), (20, 3611282), (40, 1805641)]