81317815

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{7853}}^1$

素因数の和:7986

約数の個数: 16

約数和(自身を含む): 103672800

約数和(自身を除く): 22354985

約数列:

[1, 5, 19, 95, 109, 545, 2071, 7853, 10355, 39265, 149207, 746035, 855977, 4279885, 16263563, 81317815]

約数ペア:

[(1, 81317815), (5, 16263563), (19, 4279885), (95, 855977), (109, 746035), (545, 149207), (2071, 39265), (7853, 10355)]