21290216

素因数分解:

$2^3\times {\mathrm{193}}^1\times {\mathrm{13789}}^1$

素因数の和:13988

約数の個数: 16

約数和(自身を含む): 40128900

約数和(自身を除く): 18838684

約数列:

[1, 2, 4, 8, 193, 386, 772, 1544, 13789, 27578, 55156, 110312, 2661277, 5322554, 10645108, 21290216]

約数ペア:

[(1, 21290216), (2, 10645108), (4, 5322554), (8, 2661277), (193, 110312), (386, 55156), (772, 27578), (1544, 13789)]