81511985

素因数分解:

$5^1\times {\mathrm{89}}^1\times {\mathrm{113}}^1\times {\mathrm{1621}}^1$

素因数の和:1828

約数の個数: 16

約数和(自身を含む): 99850320

約数和(自身を除く): 18338335

約数列:

[1, 5, 89, 113, 445, 565, 1621, 8105, 10057, 50285, 144269, 183173, 721345, 915865, 16302397, 81511985]

約数ペア:

[(1, 81511985), (5, 16302397), (89, 915865), (113, 721345), (445, 183173), (565, 144269), (1621, 50285), (8105, 10057)]