21743721

素因数分解:

$3^4\times {\mathrm{331}}^1\times {\mathrm{811}}^1$

素因数の和:1154

約数の個数: 20

約数和(自身を含む): 32619664

約数和(自身を除く): 10875943

約数列:

[1, 3, 9, 27, 81, 331, 811, 993, 2433, 2979, 7299, 8937, 21897, 26811, 65691, 268441, 805323, 2415969, 7247907, 21743721]

約数ペア:

[(1, 21743721), (3, 7247907), (9, 2415969), (27, 805323), (81, 268441), (331, 65691), (811, 26811), (993, 21897), (2433, 8937), (2979, 7299)]