20282031

素因数分解:

$3^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{113}}^1$

素因数の和:181

約数の個数: 72

約数和(自身を含む): 38520144

約数和(自身を除く): 18238113

約数列:

[1, 3, 7, 9, 11, 21, 33, 37, 49, 63, 77, 99, 111, 113, 147, 231, 259, 333, 339, 407, 441, 539, 693, 777, 791, 1017, 1221, 1243, 1617, 1813, 2331, 2373, 2849, 3663, 3729, 4181, 4851, 5439, 5537, 7119, 8547, 8701, 11187, 12543, 16317, 16611, 19943, 25641, 26103, 29267, 37629, 45991, 49833, 59829, 60907, 78309, 87801, 137973, 179487, 182721, 204869, 263403, 321937, 413919, 548163, 614607, 965811, 1843821, 2253559, 2897433, 6760677, 20282031]

約数ペア:

[(1, 20282031), (3, 6760677), (7, 2897433), (9, 2253559), (11, 1843821), (21, 965811), (33, 614607), (37, 548163), (49, 413919), (63, 321937), (77, 263403), (99, 204869), (111, 182721), (113, 179487), (147, 137973), (231, 87801), (259, 78309), (333, 60907), (339, 59829), (407, 49833), (441, 45991), (539, 37629), (693, 29267), (777, 26103), (791, 25641), (1017, 19943), (1221, 16611), (1243, 16317), (1617, 12543), (1813, 11187), (2331, 8701), (2373, 8547), (2849, 7119), (3663, 5537), (3729, 5439), (4181, 4851)]