81327519

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{499}}^1$

素因数の和:724

約数の個数: 48

約数和(自身を含む): 145600000

約数和(自身を除く): 64272481

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 199, 273, 499, 597, 819, 1393, 1497, 1791, 2587, 3493, 4179, 4491, 6487, 7761, 10479, 12537, 18109, 19461, 23283, 31437, 45409, 54327, 58383, 99301, 136227, 162981, 297903, 408681, 695107, 893709, 1290913, 2085321, 3872739, 6255963, 9036391, 11618217, 27109173, 81327519]

約数ペア:

[(1, 81327519), (3, 27109173), (7, 11618217), (9, 9036391), (13, 6255963), (21, 3872739), (39, 2085321), (63, 1290913), (91, 893709), (117, 695107), (199, 408681), (273, 297903), (499, 162981), (597, 136227), (819, 99301), (1393, 58383), (1497, 54327), (1791, 45409), (2587, 31437), (3493, 23283), (4179, 19461), (4491, 18109), (6487, 12537), (7761, 10479)]