21780664

素因数分解:

$2^3\times {\mathrm{1163}}^1\times {\mathrm{2341}}^1$

素因数の和:3510

約数の個数: 16

約数和(自身を含む): 40891320

約数和(自身を除く): 19110656

約数列:

[1, 2, 4, 8, 1163, 2326, 2341, 4652, 4682, 9304, 9364, 18728, 2722583, 5445166, 10890332, 21780664]

約数ペア:

[(1, 21780664), (2, 10890332), (4, 5445166), (8, 2722583), (1163, 18728), (2326, 9364), (2341, 9304), (4652, 4682)]