20233521

素因数分解:

$3^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1$

素因数の和:171

約数の個数: 72

約数和(自身を含む): 38342304

約数和(自身を除く): 18108783

約数列:

[1, 3, 7, 9, 11, 21, 33, 43, 49, 63, 77, 97, 99, 129, 147, 231, 291, 301, 387, 441, 473, 539, 679, 693, 873, 903, 1067, 1419, 1617, 2037, 2107, 2709, 3201, 3311, 4171, 4257, 4753, 4851, 6111, 6321, 7469, 9603, 9933, 12513, 14259, 18963, 22407, 23177, 29197, 29799, 37539, 42777, 45881, 52283, 67221, 69531, 87591, 137643, 156849, 204379, 208593, 262773, 321167, 412929, 470547, 613137, 963501, 1839411, 2248169, 2890503, 6744507, 20233521]

約数ペア:

[(1, 20233521), (3, 6744507), (7, 2890503), (9, 2248169), (11, 1839411), (21, 963501), (33, 613137), (43, 470547), (49, 412929), (63, 321167), (77, 262773), (97, 208593), (99, 204379), (129, 156849), (147, 137643), (231, 87591), (291, 69531), (301, 67221), (387, 52283), (441, 45881), (473, 42777), (539, 37539), (679, 29799), (693, 29197), (873, 23177), (903, 22407), (1067, 18963), (1419, 14259), (1617, 12513), (2037, 9933), (2107, 9603), (2709, 7469), (3201, 6321), (3311, 6111), (4171, 4851), (4257, 4753)]