21721450

素因数分解:

$2^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{10103}}^1$

素因数の和:10158

約数の個数: 24

約数和(自身を含む): 41345568

約数和(自身を除く): 19624118

約数列:

[1, 2, 5, 10, 25, 43, 50, 86, 215, 430, 1075, 2150, 10103, 20206, 50515, 101030, 252575, 434429, 505150, 868858, 2172145, 4344290, 10860725, 21721450]

約数ペア:

[(1, 21721450), (2, 10860725), (5, 4344290), (10, 2172145), (25, 868858), (43, 505150), (50, 434429), (86, 252575), (215, 101030), (430, 50515), (1075, 20206), (2150, 10103)]