21000992181

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{12522953}}^1$

素因数の和:12523012

約数の個数: 16

約数和(自身を含む): 30856558656

約数和(自身を除く): 9855566475

約数列:

[1, 3, 13, 39, 43, 129, 559, 1677, 12522953, 37568859, 162798389, 488395167, 538486979, 1615460937, 7000330727, 21000992181]

約数ペア:

[(1, 21000992181), (3, 7000330727), (13, 1615460937), (39, 538486979), (43, 488395167), (129, 162798389), (559, 37568859), (1677, 12522953)]