21351688

素因数分解:

$2^3\times {\mathrm{71}}^1\times {\mathrm{37591}}^1$

素因数の和:37668

約数の個数: 16

約数和(自身を含む): 40599360

約数和(自身を除く): 19247672

約数列:

[1, 2, 4, 8, 71, 142, 284, 568, 37591, 75182, 150364, 300728, 2668961, 5337922, 10675844, 21351688]

約数ペア:

[(1, 21351688), (2, 10675844), (4, 5337922), (8, 2668961), (71, 300728), (142, 150364), (284, 75182), (568, 37591)]