19997185

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{18097}}^1$

素因数の和:18132

約数の個数: 16

約数和(自身を含む): 27364176

約数和(自身を除く): 7366991

約数列:

[1, 5, 13, 17, 65, 85, 221, 1105, 18097, 90485, 235261, 307649, 1176305, 1538245, 3999437, 19997185]

約数ペア:

[(1, 19997185), (5, 3999437), (13, 1538245), (17, 1176305), (65, 307649), (85, 235261), (221, 90485), (1105, 18097)]