18820347

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{5303}}^1$

素因数の和:5339

約数の個数: 24

約数和(自身を含む): 31060224

約数和(自身を除く): 12239877

約数列:

[1, 3, 7, 13, 21, 39, 91, 169, 273, 507, 1183, 3549, 5303, 15909, 37121, 68939, 111363, 206817, 482573, 896207, 1447719, 2688621, 6273449, 18820347]

約数ペア:

[(1, 18820347), (3, 6273449), (7, 2688621), (13, 1447719), (21, 896207), (39, 482573), (91, 206817), (169, 111363), (273, 68939), (507, 37121), (1183, 15909), (3549, 5303)]