21923421

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{769}}^1$

素因数の和:845

約数の個数: 32

約数和(自身を含む): 34151040

約数和(自身を除く): 12227619

約数列:

[1, 3, 13, 17, 39, 43, 51, 129, 221, 559, 663, 731, 769, 1677, 2193, 2307, 9503, 9997, 13073, 28509, 29991, 33067, 39219, 99201, 169949, 429871, 509847, 562139, 1289613, 1686417, 7307807, 21923421]

約数ペア:

[(1, 21923421), (3, 7307807), (13, 1686417), (17, 1289613), (39, 562139), (43, 509847), (51, 429871), (129, 169949), (221, 99201), (559, 39219), (663, 33067), (731, 29991), (769, 28509), (1677, 13073), (2193, 9997), (2307, 9503)]