20800143

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{233}}^1$

素因数の和:368

約数の個数: 48

約数和(自身を含む): 37477440

約数和(自身を除く): 16677297

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 109, 117, 233, 273, 327, 699, 763, 819, 981, 1417, 1631, 2097, 2289, 3029, 4251, 4893, 6867, 9087, 9919, 12753, 14679, 21203, 25397, 27261, 29757, 63609, 76191, 89271, 177779, 190827, 228573, 330161, 533337, 990483, 1600011, 2311127, 2971449, 6933381, 20800143]

約数ペア:

[(1, 20800143), (3, 6933381), (7, 2971449), (9, 2311127), (13, 1600011), (21, 990483), (39, 533337), (63, 330161), (91, 228573), (109, 190827), (117, 177779), (233, 89271), (273, 76191), (327, 63609), (699, 29757), (763, 27261), (819, 25397), (981, 21203), (1417, 14679), (1631, 12753), (2097, 9919), (2289, 9087), (3029, 6867), (4251, 4893)]