18221637

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{1187}}^1$

素因数の和:1257

約数の個数: 32

約数和(自身を含む): 30108672

約数和(自身を除く): 11887035

約数列:

[1, 3, 7, 17, 21, 43, 51, 119, 129, 301, 357, 731, 903, 1187, 2193, 3561, 5117, 8309, 15351, 20179, 24927, 51041, 60537, 141253, 153123, 357287, 423759, 867697, 1071861, 2603091, 6073879, 18221637]

約数ペア:

[(1, 18221637), (3, 6073879), (7, 2603091), (17, 1071861), (21, 867697), (43, 423759), (51, 357287), (119, 153123), (129, 141253), (301, 60537), (357, 51041), (731, 24927), (903, 20179), (1187, 15351), (2193, 8309), (3561, 5117)]