18944575

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{821}}^1$

素因数の和:915

約数の個数: 24

約数和(自身を含む): 25685856

約数和(自身を除く): 6741281

約数列:

[1, 5, 13, 25, 65, 71, 325, 355, 821, 923, 1775, 4105, 4615, 10673, 20525, 23075, 53365, 58291, 266825, 291455, 757783, 1457275, 3788915, 18944575]

約数ペア:

[(1, 18944575), (5, 3788915), (13, 1457275), (25, 757783), (65, 291455), (71, 266825), (325, 58291), (355, 53365), (821, 23075), (923, 20525), (1775, 10673), (4105, 4615)]