18709965

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{277}}^1$

素因数の和:386

約数の個数: 48

約数和(自身を含む): 34694400

約数和(自身を除く): 15984435

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 79, 95, 171, 237, 277, 285, 395, 711, 831, 855, 1185, 1385, 1501, 2493, 3555, 4155, 4503, 5263, 7505, 12465, 13509, 15789, 21883, 22515, 26315, 47367, 65649, 67545, 78945, 109415, 196947, 236835, 328245, 415777, 984735, 1247331, 2078885, 3741993, 6236655, 18709965]

約数ペア:

[(1, 18709965), (3, 6236655), (5, 3741993), (9, 2078885), (15, 1247331), (19, 984735), (45, 415777), (57, 328245), (79, 236835), (95, 196947), (171, 109415), (237, 78945), (277, 67545), (285, 65649), (395, 47367), (711, 26315), (831, 22515), (855, 21883), (1185, 15789), (1385, 13509), (1501, 12465), (2493, 7505), (3555, 5263), (4155, 4503)]