20878828

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{73517}}^1$

素因数の和:73592

約数の個数: 12

約数和(自身を含む): 37053072

約数和(自身を除く): 16174244

約数列:

[1, 2, 4, 71, 142, 284, 73517, 147034, 294068, 5219707, 10439414, 20878828]

約数ペア:

[(1, 20878828), (2, 10439414), (4, 5219707), (71, 294068), (142, 147034), (284, 73517)]