21104296

素因数分解:

$2^3\times {\mathrm{1321}}^1\times {\mathrm{1997}}^1$

素因数の和:3324

約数の個数: 16

約数和(自身を含む): 39620340

約数和(自身を除く): 18516044

約数列:

[1, 2, 4, 8, 1321, 1997, 2642, 3994, 5284, 7988, 10568, 15976, 2638037, 5276074, 10552148, 21104296]

約数ペア:

[(1, 21104296), (2, 10552148), (4, 5276074), (8, 2638037), (1321, 15976), (1997, 10568), (2642, 7988), (3994, 5284)]