21509816

素因数分解:

$2^3\times {\mathrm{487}}^1\times {\mathrm{5521}}^1$

素因数の和:6014

約数の個数: 16

約数和(自身を含む): 40421040

約数和(自身を除く): 18911224

約数列:

[1, 2, 4, 8, 487, 974, 1948, 3896, 5521, 11042, 22084, 44168, 2688727, 5377454, 10754908, 21509816]

約数ペア:

[(1, 21509816), (2, 10754908), (4, 5377454), (8, 2688727), (487, 44168), (974, 22084), (1948, 11042), (3896, 5521)]