21680049

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{5381}}^1$

素因数の和:5480

約数の個数: 16

約数和(自身を含む): 31000320

約数和(自身を除く): 9320271

約数列:

[1, 3, 17, 51, 79, 237, 1343, 4029, 5381, 16143, 91477, 274431, 425099, 1275297, 7226683, 21680049]

約数ペア:

[(1, 21680049), (3, 7226683), (17, 1275297), (51, 425099), (79, 274431), (237, 91477), (1343, 16143), (4029, 5381)]