21987069

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{2551}}^1$

素因数の和:2597

約数の個数: 24

約数和(自身を含む): 33625152

約数和(自身を除く): 11638083

約数列:

[1, 3, 13, 17, 39, 51, 169, 221, 507, 663, 2551, 2873, 7653, 8619, 33163, 43367, 99489, 130101, 431119, 563771, 1293357, 1691313, 7329023, 21987069]

約数ペア:

[(1, 21987069), (3, 7329023), (13, 1691313), (17, 1293357), (39, 563771), (51, 431119), (169, 130101), (221, 99489), (507, 43367), (663, 33163), (2551, 8619), (2873, 7653)]