21081567

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{967}}^1$

素因数の和:1039

約数の個数: 24

約数和(自身を含む): 31177344

約数和(自身を除く): 10095777

約数列:

[1, 3, 13, 39, 43, 129, 169, 507, 559, 967, 1677, 2901, 7267, 12571, 21801, 37713, 41581, 124743, 163423, 490269, 540553, 1621659, 7027189, 21081567]

約数ペア:

[(1, 21081567), (3, 7027189), (13, 1621659), (39, 540553), (43, 490269), (129, 163423), (169, 124743), (507, 41581), (559, 37713), (967, 21801), (1677, 12571), (2901, 7267)]