21056399

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{3259}}^1$

素因数の和:3350

約数の個数: 16

約数和(自身を含む): 26288640

約数和(自身を除く): 5232241

約数列:

[1, 7, 13, 71, 91, 497, 923, 3259, 6461, 22813, 42367, 231389, 296569, 1619723, 3008057, 21056399]

約数ペア:

[(1, 21056399), (7, 3008057), (13, 1619723), (71, 296569), (91, 231389), (497, 42367), (923, 22813), (3259, 6461)]