18638347

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{6607}}^1$

素因数の和:6658

約数の個数: 16

約数和(自身を含む): 23683072

約数和(自身を除く): 5044725

約数列:

[1, 7, 13, 31, 91, 217, 403, 2821, 6607, 46249, 85891, 204817, 601237, 1433719, 2662621, 18638347]

約数ペア:

[(1, 18638347), (7, 2662621), (13, 1433719), (31, 601237), (91, 204817), (217, 85891), (403, 46249), (2821, 6607)]