21406278

素因数分解:

$2^1\times 3^1\times {\mathrm{139}}^1\times {\mathrm{25667}}^1$

素因数の和:25811

約数の個数: 16

約数和(自身を含む): 43122240

約数和(自身を除く): 21715962

約数列:

[1, 2, 3, 6, 139, 278, 417, 834, 25667, 51334, 77001, 154002, 3567713, 7135426, 10703139, 21406278]

約数ペア:

[(1, 21406278), (2, 10703139), (3, 7135426), (6, 3567713), (139, 154002), (278, 77001), (417, 51334), (834, 25667)]