20900270

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{29437}}^1$

素因数の和:29515

約数の個数: 16

約数和(自身を含む): 38151648

約数和(自身を除く): 17251378

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 29437, 58874, 147185, 294370, 2090027, 4180054, 10450135, 20900270]

約数ペア:

[(1, 20900270), (2, 10450135), (5, 4180054), (10, 2090027), (71, 294370), (142, 147185), (355, 58874), (710, 29437)]