31269987

素因数分解:

$3^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1$

素因数の和:177

約数の個数: 72

約数和(自身を含む): 57513456

約数和(自身を除く): 26243469

約数列:

[1, 3, 7, 9, 17, 21, 43, 49, 51, 63, 97, 119, 129, 147, 153, 291, 301, 357, 387, 441, 679, 731, 833, 873, 903, 1071, 1649, 2037, 2107, 2193, 2499, 2709, 4171, 4753, 4947, 5117, 6111, 6321, 6579, 7497, 11543, 12513, 14259, 14841, 15351, 18963, 29197, 34629, 35819, 37539, 42777, 46053, 70907, 80801, 87591, 103887, 107457, 204379, 212721, 242403, 262773, 322371, 496349, 613137, 638163, 727209, 1489047, 1839411, 3474443, 4467141, 10423329, 31269987]

約数ペア:

[(1, 31269987), (3, 10423329), (7, 4467141), (9, 3474443), (17, 1839411), (21, 1489047), (43, 727209), (49, 638163), (51, 613137), (63, 496349), (97, 322371), (119, 262773), (129, 242403), (147, 212721), (153, 204379), (291, 107457), (301, 103887), (357, 87591), (387, 80801), (441, 70907), (679, 46053), (731, 42777), (833, 37539), (873, 35819), (903, 34629), (1071, 29197), (1649, 18963), (2037, 15351), (2107, 14841), (2193, 14259), (2499, 12513), (2709, 11543), (4171, 7497), (4753, 6579), (4947, 6321), (5117, 6111)]