18890417

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{12211}}^1$

素因数の和:12248

約数の個数: 16

約数和(自身を含む): 24619392

約数和(自身を除く): 5728975

約数列:

[1, 7, 13, 17, 91, 119, 221, 1547, 12211, 85477, 158743, 207587, 1111201, 1453109, 2698631, 18890417]

約数ペア:

[(1, 18890417), (7, 2698631), (13, 1453109), (17, 1111201), (91, 207587), (119, 158743), (221, 85477), (1547, 12211)]