20171851

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{349}}^1\times {\mathrm{359}}^1$

素因数の和:738

約数の個数: 16

約数和(自身を含む): 24192000

約数和(自身を除く): 4020149

約数列:

[1, 7, 23, 161, 349, 359, 2443, 2513, 8027, 8257, 56189, 57799, 125291, 877037, 2881693, 20171851]

約数ペア:

[(1, 20171851), (7, 2881693), (23, 877037), (161, 125291), (349, 57799), (359, 56189), (2443, 8257), (2513, 8027)]