15897021

素因数分解:

$3^1\times 7^4\times {\mathrm{2207}}^1$

素因数の和:2238

約数の個数: 20

約数和(自身を含む): 24738432

約数和(自身を除く): 8841411

約数列:

[1, 3, 7, 21, 49, 147, 343, 1029, 2207, 2401, 6621, 7203, 15449, 46347, 108143, 324429, 757001, 2271003, 5299007, 15897021]

約数ペア:

[(1, 15897021), (3, 5299007), (7, 2271003), (21, 757001), (49, 324429), (147, 108143), (343, 46347), (1029, 15449), (2207, 7203), (2401, 6621)]