20970986

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{6421}}^1$

素因数の和:6517

約数の個数: 16

約数和(自身を含む): 33291648

約数和(自身を除く): 12320662

約数列:

[1, 2, 23, 46, 71, 142, 1633, 3266, 6421, 12842, 147683, 295366, 455891, 911782, 10485493, 20970986]

約数ペア:

[(1, 20970986), (2, 10485493), (23, 911782), (46, 455891), (71, 295366), (142, 147683), (1633, 12842), (3266, 6421)]