21379852

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{31627}}^1$

素因数の和:31657

約数の個数: 18

約数和(自身を含む): 40515468

約数和(自身を除く): 19135616

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 31627, 63254, 126508, 411151, 822302, 1644604, 5344963, 10689926, 21379852]

約数ペア:

[(1, 21379852), (2, 10689926), (4, 5344963), (13, 1644604), (26, 822302), (52, 411151), (169, 126508), (338, 63254), (676, 31627)]