19993323

素因数分解:

$3^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{3163}}^1$

素因数の和:3223

約数の個数: 24

約数和(自身を含む): 31741248

約数和(自身を除く): 11747925

約数列:

[1, 3, 7, 21, 43, 49, 129, 147, 301, 903, 2107, 3163, 6321, 9489, 22141, 66423, 136009, 154987, 408027, 464961, 952063, 2856189, 6664441, 19993323]

約数ペア:

[(1, 19993323), (3, 6664441), (7, 2856189), (21, 952063), (43, 464961), (49, 408027), (129, 154987), (147, 136009), (301, 66423), (903, 22141), (2107, 9489), (3163, 6321)]