21865669

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{1621}}^1$

素因数の和:1716

約数の個数: 16

約数和(自身を含む): 26159616

約数和(自身を除く): 4293947

約数列:

[1, 7, 41, 47, 287, 329, 1621, 1927, 11347, 13489, 66461, 76187, 465227, 533309, 3123667, 21865669]

約数ペア:

[(1, 21865669), (7, 3123667), (41, 533309), (47, 465227), (287, 76187), (329, 66461), (1621, 13489), (1927, 11347)]