21520716

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{256199}}^1$

素因数の和:256213

約数の個数: 24

約数和(自身を含む): 57388800

約数和(自身を除く): 35868084

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 256199, 512398, 768597, 1024796, 1537194, 1793393, 3074388, 3586786, 5380179, 7173572, 10760358, 21520716]

約数ペア:

[(1, 21520716), (2, 10760358), (3, 7173572), (4, 5380179), (6, 3586786), (7, 3074388), (12, 1793393), (14, 1537194), (21, 1024796), (28, 768597), (42, 512398), (84, 256199)]