81117665

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{643}}^1\times {\mathrm{1097}}^1$

素因数の和:1768

約数の個数: 16

約数和(自身を含む): 101824128

約数和(自身を除く): 20706463

約数列:

[1, 5, 23, 115, 643, 1097, 3215, 5485, 14789, 25231, 73945, 126155, 705371, 3526855, 16223533, 81117665]

約数ペア:

[(1, 81117665), (5, 16223533), (23, 3526855), (115, 705371), (643, 126155), (1097, 73945), (3215, 25231), (5485, 14789)]