21391016

素因数分解:

$2^3\times {\mathrm{47}}^1\times {\mathrm{56891}}^1$

素因数の和:56944

約数の個数: 16

約数和(自身を含む): 40962240

約数和(自身を除く): 19571224

約数列:

[1, 2, 4, 8, 47, 94, 188, 376, 56891, 113782, 227564, 455128, 2673877, 5347754, 10695508, 21391016]

約数ペア:

[(1, 21391016), (2, 10695508), (4, 5347754), (8, 2673877), (47, 455128), (94, 227564), (188, 113782), (376, 56891)]