21700251

素因数分解:

$3^3\times {\mathrm{43}}^1\times {\mathrm{18691}}^1$

素因数の和:18743

約数の個数: 16

約数和(自身を含む): 32897920

約数和(自身を除く): 11197669

約数列:

[1, 3, 9, 27, 43, 129, 387, 1161, 18691, 56073, 168219, 504657, 803713, 2411139, 7233417, 21700251]

約数ペア:

[(1, 21700251), (3, 7233417), (9, 2411139), (27, 803713), (43, 504657), (129, 168219), (387, 56073), (1161, 18691)]