28327221

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{1229}}^1$

素因数の和:1445

約数の個数: 24

約数和(自身を含む): 44324280

約数和(自身を除く): 15997059

約数列:

[1, 3, 9, 13, 39, 117, 197, 591, 1229, 1773, 2561, 3687, 7683, 11061, 15977, 23049, 47931, 143793, 242113, 726339, 2179017, 3147469, 9442407, 28327221]

約数ペア:

[(1, 28327221), (3, 9442407), (9, 3147469), (13, 2179017), (39, 726339), (117, 242113), (197, 143793), (591, 47931), (1229, 23049), (1773, 15977), (2561, 11061), (3687, 7683)]