18813195

素因数分解:

$3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{83}}^1$

素因数の和:193

約数の個数: 64

約数和(自身を含む): 35804160

約数和(自身を除く): 16990965

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 73, 83, 115, 135, 207, 219, 249, 345, 365, 415, 621, 657, 747, 1035, 1095, 1245, 1679, 1909, 1971, 2241, 3105, 3285, 3735, 5037, 5727, 6059, 8395, 9545, 9855, 11205, 15111, 17181, 18177, 25185, 28635, 30295, 45333, 51543, 54531, 75555, 85905, 90885, 139357, 163593, 226665, 257715, 272655, 418071, 696785, 817965, 1254213, 2090355, 3762639, 6271065, 18813195]

約数ペア:

[(1, 18813195), (3, 6271065), (5, 3762639), (9, 2090355), (15, 1254213), (23, 817965), (27, 696785), (45, 418071), (69, 272655), (73, 257715), (83, 226665), (115, 163593), (135, 139357), (207, 90885), (219, 85905), (249, 75555), (345, 54531), (365, 51543), (415, 45333), (621, 30295), (657, 28635), (747, 25185), (1035, 18177), (1095, 17181), (1245, 15111), (1679, 11205), (1909, 9855), (1971, 9545), (2241, 8395), (3105, 6059), (3285, 5727), (3735, 5037)]