21889231

素因数分解:

$7^3\times {\mathrm{13}}^1\times {\mathrm{4909}}^1$

素因数の和:4943

約数の個数: 16

約数和(自身を含む): 27496000

約数和(自身を除く): 5606769

約数列:

[1, 7, 13, 49, 91, 343, 637, 4459, 4909, 34363, 63817, 240541, 446719, 1683787, 3127033, 21889231]

約数ペア:

[(1, 21889231), (7, 3127033), (13, 1683787), (49, 446719), (91, 240541), (343, 63817), (637, 34363), (4459, 4909)]