17997581

素因数分解:

$7^1\times {\mathrm{53}}^1\times {\mathrm{139}}^1\times {\mathrm{349}}^1$

素因数の和:548

約数の個数: 16

約数和(自身を含む): 21168000

約数和(自身を除く): 3170419

約数列:

[1, 7, 53, 139, 349, 371, 973, 2443, 7367, 18497, 48511, 51569, 129479, 339577, 2571083, 17997581]

約数ペア:

[(1, 17997581), (7, 2571083), (53, 339577), (139, 129479), (349, 51569), (371, 48511), (973, 18497), (2443, 7367)]