21187912

素因数分解:

$2^3\times {\mathrm{307}}^1\times {\mathrm{8627}}^1$

素因数の和:8940

約数の個数: 16

約数和(自身を含む): 39861360

約数和(自身を除く): 18673448

約数列:

[1, 2, 4, 8, 307, 614, 1228, 2456, 8627, 17254, 34508, 69016, 2648489, 5296978, 10593956, 21187912]

約数ペア:

[(1, 21187912), (2, 10593956), (4, 5296978), (8, 2648489), (307, 69016), (614, 34508), (1228, 17254), (2456, 8627)]