648045140

素因数分解:

$2^2\times 5^1\times {\mathrm{6271}}^1\times {\mathrm{5167}}^1$

素因数の和:11447

約数の個数: 24

約数和(自身を含む): 1361375232

約数和(自身を除く): 713330092

約数列:

[1, 2, 4, 5, 10, 20, 5167, 6271, 10334, 12542, 20668, 25084, 25835, 31355, 51670, 62710, 103340, 125420, 32402257, 64804514, 129609028, 162011285, 324022570, 648045140]

約数ペア:

[(1, 648045140), (2, 324022570), (4, 162011285), (5, 129609028), (10, 64804514), (20, 32402257), (5167, 125420), (6271, 103340), (10334, 62710), (12542, 51670), (20668, 31355), (25084, 25835)]