18402579

素因数分解:

$3^3\times {\mathrm{13}}^2\times {\mathrm{37}}^1\times {\mathrm{109}}^1$

素因数の和:181

約数の個数: 48

約数和(自身を含む): 30597600

約数和(自身を除く): 12195021

約数列:

[1, 3, 9, 13, 27, 37, 39, 109, 111, 117, 169, 327, 333, 351, 481, 507, 981, 999, 1417, 1443, 1521, 2943, 4033, 4251, 4329, 4563, 6253, 12099, 12753, 12987, 18421, 18759, 36297, 38259, 52429, 55263, 56277, 108891, 157287, 165789, 168831, 471861, 497367, 681577, 1415583, 2044731, 6134193, 18402579]

約数ペア:

[(1, 18402579), (3, 6134193), (9, 2044731), (13, 1415583), (27, 681577), (37, 497367), (39, 471861), (109, 168831), (111, 165789), (117, 157287), (169, 108891), (327, 56277), (333, 55263), (351, 52429), (481, 38259), (507, 36297), (981, 18759), (999, 18421), (1417, 12987), (1443, 12753), (1521, 12099), (2943, 6253), (4033, 4563), (4251, 4329)]