20628531

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{103}}^1$

素因数の和:161

約数の個数: 72

約数和(自身を含む): 39846144

約数和(自身を除く): 19217613

約数列:

[1, 3, 7, 9, 11, 17, 21, 33, 51, 63, 77, 99, 103, 119, 153, 187, 231, 289, 309, 357, 561, 693, 721, 867, 927, 1071, 1133, 1309, 1683, 1751, 2023, 2163, 2601, 3179, 3399, 3927, 5253, 6069, 6489, 7931, 9537, 10197, 11781, 12257, 15759, 18207, 19261, 22253, 23793, 28611, 29767, 36771, 57783, 66759, 71379, 89301, 110313, 134827, 173349, 200277, 208369, 267903, 327437, 404481, 625107, 982311, 1213443, 1875321, 2292059, 2946933, 6876177, 20628531]

約数ペア:

[(1, 20628531), (3, 6876177), (7, 2946933), (9, 2292059), (11, 1875321), (17, 1213443), (21, 982311), (33, 625107), (51, 404481), (63, 327437), (77, 267903), (99, 208369), (103, 200277), (119, 173349), (153, 134827), (187, 110313), (231, 89301), (289, 71379), (309, 66759), (357, 57783), (561, 36771), (693, 29767), (721, 28611), (867, 23793), (927, 22253), (1071, 19261), (1133, 18207), (1309, 15759), (1683, 12257), (1751, 11781), (2023, 10197), (2163, 9537), (2601, 7931), (3179, 6489), (3399, 6069), (3927, 5253)]