19797872

素因数分解:

$2^4\times {\mathrm{89}}^1\times {\mathrm{13903}}^1$

素因数の和:14000

約数の個数: 20

約数和(自身を含む): 38792160

約数和(自身を除く): 18994288

約数列:

[1, 2, 4, 8, 16, 89, 178, 356, 712, 1424, 13903, 27806, 55612, 111224, 222448, 1237367, 2474734, 4949468, 9898936, 19797872]

約数ペア:

[(1, 19797872), (2, 9898936), (4, 4949468), (8, 2474734), (16, 1237367), (89, 222448), (178, 111224), (356, 55612), (712, 27806), (1424, 13903)]