639815764

素因数分解:

$2^2\times 7^1\times {\mathrm{2087}}^1\times {\mathrm{10949}}^1$

素因数の和:13047

約数の個数: 24

約数和(自身を含む): 1280361600

約数和(自身を除く): 640545836

約数列:

[1, 2, 4, 7, 14, 28, 2087, 4174, 8348, 10949, 14609, 21898, 29218, 43796, 58436, 76643, 153286, 306572, 22850563, 45701126, 91402252, 159953941, 319907882, 639815764]

約数ペア:

[(1, 639815764), (2, 319907882), (4, 159953941), (7, 91402252), (14, 45701126), (28, 22850563), (2087, 306572), (4174, 153286), (8348, 76643), (10949, 58436), (14609, 43796), (21898, 29218)]