20971270

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{29537}}^1$

素因数の和:29615

約数の個数: 16

約数和(自身を含む): 38281248

約数和(自身を除く): 17309978

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 29537, 59074, 147685, 295370, 2097127, 4194254, 10485635, 20971270]

約数ペア:

[(1, 20971270), (2, 10485635), (5, 4194254), (10, 2097127), (71, 295370), (142, 147685), (355, 59074), (710, 29537)]