18090891

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{199}}^1$

素因数の和:265

約数の個数: 64

約数和(自身を含む): 34048000

約数和(自身を除く): 15957109

約数列:

[1, 3, 7, 9, 13, 21, 27, 37, 39, 63, 91, 111, 117, 189, 199, 259, 273, 333, 351, 481, 597, 777, 819, 999, 1393, 1443, 1791, 2331, 2457, 2587, 3367, 4179, 4329, 5373, 6993, 7363, 7761, 10101, 12537, 12987, 18109, 22089, 23283, 30303, 37611, 51541, 54327, 66267, 69849, 90909, 95719, 154623, 162981, 198801, 287157, 463869, 488943, 670033, 861471, 1391607, 2010099, 2584413, 6030297, 18090891]

約数ペア:

[(1, 18090891), (3, 6030297), (7, 2584413), (9, 2010099), (13, 1391607), (21, 861471), (27, 670033), (37, 488943), (39, 463869), (63, 287157), (91, 198801), (111, 162981), (117, 154623), (189, 95719), (199, 90909), (259, 69849), (273, 66267), (333, 54327), (351, 51541), (481, 37611), (597, 30303), (777, 23283), (819, 22089), (999, 18109), (1393, 12987), (1443, 12537), (1791, 10101), (2331, 7761), (2457, 7363), (2587, 6993), (3367, 5373), (4179, 4329)]