81886903

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{19861}}^1$

素因数の和:19918

約数の個数: 16

約数和(自身を含む): 101693440

約数和(自身を除く): 19806537

約数列:

[1, 7, 19, 31, 133, 217, 589, 4123, 19861, 139027, 377359, 615691, 2641513, 4309837, 11698129, 81886903]

約数ペア:

[(1, 81886903), (7, 11698129), (19, 4309837), (31, 2641513), (133, 615691), (217, 377359), (589, 139027), (4123, 19861)]