9991085

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{163}}^1$

素因数の和:245

約数の個数: 32

約数和(自身を含む): 13886208

約数和(自身を除く): 3895123

約数列:

[1, 5, 13, 23, 41, 65, 115, 163, 205, 299, 533, 815, 943, 1495, 2119, 2665, 3749, 4715, 6683, 10595, 12259, 18745, 33415, 48737, 61295, 86879, 153709, 243685, 434395, 768545, 1998217, 9991085]

約数ペア:

[(1, 9991085), (5, 1998217), (13, 768545), (23, 434395), (41, 243685), (65, 153709), (115, 86879), (163, 61295), (205, 48737), (299, 33415), (533, 18745), (815, 12259), (943, 10595), (1495, 6683), (2119, 4715), (2665, 3749)]