9891245

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{21739}}^1$

素因数の和:21764

約数の個数: 16

約数和(自身を含む): 14609280

約数和(自身を除く): 4718035

約数列:

[1, 5, 7, 13, 35, 65, 91, 455, 21739, 108695, 152173, 282607, 760865, 1413035, 1978249, 9891245]

約数ペア:

[(1, 9891245), (5, 1978249), (7, 1413035), (13, 760865), (35, 282607), (65, 152173), (91, 108695), (455, 21739)]