720963313

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{639719}}^1$

素因数の和:639756

約数の個数: 12

約数和(自身を含む): 875136960

約数和(自身を除く): 154173647

約数列:

[1, 7, 23, 49, 161, 1127, 639719, 4478033, 14713537, 31346231, 102994759, 720963313]

約数ペア:

[(1, 720963313), (7, 102994759), (23, 31346231), (49, 14713537), (161, 4478033), (1127, 639719)]