21410012

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{2069}}^1$

素因数の和:2285

約数の個数: 24

約数和(自身を含む): 40572000

約数和(自身を除く): 19161988

約数列:

[1, 2, 4, 13, 26, 52, 199, 398, 796, 2069, 2587, 4138, 5174, 8276, 10348, 26897, 53794, 107588, 411731, 823462, 1646924, 5352503, 10705006, 21410012]

約数ペア:

[(1, 21410012), (2, 10705006), (4, 5352503), (13, 1646924), (26, 823462), (52, 411731), (199, 107588), (398, 53794), (796, 26897), (2069, 10348), (2587, 8276), (4138, 5174)]