21151850

素因数分解:

$2^1\times 5^2\times {\mathrm{127}}^1\times {\mathrm{3331}}^1$

素因数の和:3470

約数の個数: 24

約数和(自身を含む): 39664128

約数和(自身を除く): 18512278

約数列:

[1, 2, 5, 10, 25, 50, 127, 254, 635, 1270, 3175, 3331, 6350, 6662, 16655, 33310, 83275, 166550, 423037, 846074, 2115185, 4230370, 10575925, 21151850]

約数ペア:

[(1, 21151850), (2, 10575925), (5, 4230370), (10, 2115185), (25, 846074), (50, 423037), (127, 166550), (254, 83275), (635, 33310), (1270, 16655), (3175, 6662), (3331, 6350)]