91991185

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{128659}}^1$

素因数の和:128688

約数の個数: 16

約数和(自身を含む): 129689280

約数和(自身を除く): 37698095

約数列:

[1, 5, 11, 13, 55, 65, 143, 715, 128659, 643295, 1415249, 1672567, 7076245, 8362835, 18398237, 91991185]

約数ペア:

[(1, 91991185), (5, 18398237), (11, 8362835), (13, 7076245), (55, 1672567), (65, 1415249), (143, 643295), (715, 128659)]