20178859491

素因数分解:

$3^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{257}}^1\times {\mathrm{7741}}^1$

素因数の和:8041

約数の個数: 72

約数和(自身を含む): 35522401824

約数和(自身を除く): 15343542333

約数列:

[1, 3, 7, 9, 21, 23, 49, 63, 69, 147, 161, 207, 257, 441, 483, 771, 1127, 1449, 1799, 2313, 3381, 5397, 5911, 7741, 10143, 12593, 16191, 17733, 23223, 37779, 41377, 53199, 54187, 69669, 113337, 124131, 162561, 178043, 289639, 372393, 379309, 487683, 534129, 868917, 1137927, 1246301, 1602387, 1989437, 2606751, 3413781, 3738903, 5968311, 8724107, 11216709, 13926059, 17904933, 26172321, 41778177, 45757051, 78516963, 97482413, 125334531, 137271153, 292447239, 320299357, 411813459, 877341717, 960898071, 2242095499, 2882694213, 6726286497, 20178859491]

約数ペア:

[(1, 20178859491), (3, 6726286497), (7, 2882694213), (9, 2242095499), (21, 960898071), (23, 877341717), (49, 411813459), (63, 320299357), (69, 292447239), (147, 137271153), (161, 125334531), (207, 97482413), (257, 78516963), (441, 45757051), (483, 41778177), (771, 26172321), (1127, 17904933), (1449, 13926059), (1799, 11216709), (2313, 8724107), (3381, 5968311), (5397, 3738903), (5911, 3413781), (7741, 2606751), (10143, 1989437), (12593, 1602387), (16191, 1246301), (17733, 1137927), (23223, 868917), (37779, 534129), (41377, 487683), (53199, 379309), (54187, 372393), (69669, 289639), (113337, 178043), (124131, 162561)]