21747951

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{1429}}^1$

素因数の和:1543

約数の個数: 24

約数和(自身を含む): 33462000

約数和(自身を除く): 11714049

約数列:

[1, 3, 9, 19, 57, 89, 171, 267, 801, 1429, 1691, 4287, 5073, 12861, 15219, 27151, 81453, 127181, 244359, 381543, 1144629, 2416439, 7249317, 21747951]

約数ペア:

[(1, 21747951), (3, 7249317), (9, 2416439), (19, 1144629), (57, 381543), (89, 244359), (171, 127181), (267, 81453), (801, 27151), (1429, 15219), (1691, 12861), (4287, 5073)]