21751986

素因数分解:

$2^1\times 3^1\times {\mathrm{71}}^1\times {\mathrm{51061}}^1$

素因数の和:51137

約数の個数: 16

約数和(自身を含む): 44117568

約数和(自身を除く): 22365582

約数列:

[1, 2, 3, 6, 71, 142, 213, 426, 51061, 102122, 153183, 306366, 3625331, 7250662, 10875993, 21751986]

約数ペア:

[(1, 21751986), (2, 10875993), (3, 7250662), (6, 3625331), (71, 306366), (142, 153183), (213, 102122), (426, 51061)]