21557349

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{113}}^1$

素因数の和:218

約数の個数: 48

約数和(自身を含む): 35852544

約数和(自身を除く): 14295195

約数列:

[1, 3, 9, 11, 33, 41, 47, 99, 113, 123, 141, 339, 369, 423, 451, 517, 1017, 1243, 1353, 1551, 1927, 3729, 4059, 4633, 4653, 5311, 5781, 11187, 13899, 15933, 17343, 21197, 41697, 47799, 50963, 58421, 63591, 152889, 175263, 190773, 217751, 458667, 525789, 653253, 1959759, 2395261, 7185783, 21557349]

約数ペア:

[(1, 21557349), (3, 7185783), (9, 2395261), (11, 1959759), (33, 653253), (41, 525789), (47, 458667), (99, 217751), (113, 190773), (123, 175263), (141, 152889), (339, 63591), (369, 58421), (423, 50963), (451, 47799), (517, 41697), (1017, 21197), (1243, 17343), (1353, 15933), (1551, 13899), (1927, 11187), (3729, 5781), (4059, 5311), (4633, 4653)]