18690555

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{73}}^1\times {\mathrm{101}}^1$

素因数の和:208

約数の個数: 48

約数和(自身を含む): 33150816

約数和(自身を除く): 14460261

約数列:

[1, 3, 5, 13, 15, 39, 65, 73, 101, 169, 195, 219, 303, 365, 505, 507, 845, 949, 1095, 1313, 1515, 2535, 2847, 3939, 4745, 6565, 7373, 12337, 14235, 17069, 19695, 22119, 36865, 37011, 51207, 61685, 85345, 95849, 110595, 185055, 256035, 287547, 479245, 1246037, 1437735, 3738111, 6230185, 18690555]

約数ペア:

[(1, 18690555), (3, 6230185), (5, 3738111), (13, 1437735), (15, 1246037), (39, 479245), (65, 287547), (73, 256035), (101, 185055), (169, 110595), (195, 95849), (219, 85345), (303, 61685), (365, 51207), (505, 37011), (507, 36865), (845, 22119), (949, 19695), (1095, 17069), (1313, 14235), (1515, 12337), (2535, 7373), (2847, 6565), (3939, 4745)]