81216685

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{691}}^1\times {\mathrm{2137}}^1$

素因数の和:2844

約数の個数: 16

約数和(自身を含む): 106523712

約数和(自身を除く): 25307027

約数列:

[1, 5, 11, 55, 691, 2137, 3455, 7601, 10685, 23507, 38005, 117535, 1476667, 7383335, 16243337, 81216685]

約数ペア:

[(1, 81216685), (5, 16243337), (11, 7383335), (55, 1476667), (691, 117535), (2137, 38005), (3455, 23507), (7601, 10685)]