81520831

素因数分解:

$7^1\times {\mathrm{17}}^2\times {\mathrm{59}}^1\times {\mathrm{683}}^1$

素因数の和:783

約数の個数: 24

約数和(自身を含む): 100794240

約数和(自身を除く): 19273409

約数列:

[1, 7, 17, 59, 119, 289, 413, 683, 1003, 2023, 4781, 7021, 11611, 17051, 40297, 81277, 119357, 197387, 282079, 685049, 1381709, 4795343, 11645833, 81520831]

約数ペア:

[(1, 81520831), (7, 11645833), (17, 4795343), (59, 1381709), (119, 685049), (289, 282079), (413, 197387), (683, 119357), (1003, 81277), (2023, 40297), (4781, 17051), (7021, 11611)]