19971393

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{11909}}^1$

素因数の和:11968

約数の個数: 16

約数和(自身を含む): 29346240

約数和(自身を除く): 9374847

約数列:

[1, 3, 13, 39, 43, 129, 559, 1677, 11909, 35727, 154817, 464451, 512087, 1536261, 6657131, 19971393]

約数ペア:

[(1, 19971393), (3, 6657131), (13, 1536261), (39, 512087), (43, 464451), (129, 154817), (559, 35727), (1677, 11909)]