21000816735

素因数分解:

$3^1\times 5^1\times {\mathrm{54167}}^1\times {\mathrm{25847}}^1$

素因数の和:80022

約数の個数: 16

約数和(自身を含む): 33603227136

約数和(自身を除く): 12602410401

約数列:

[1, 3, 5, 15, 25847, 54167, 77541, 129235, 162501, 270835, 387705, 812505, 1400054449, 4200163347, 7000272245, 21000816735]

約数ペア:

[(1, 21000816735), (3, 7000272245), (5, 4200163347), (15, 1400054449), (25847, 812505), (54167, 387705), (77541, 270835), (129235, 162501)]