18944471

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{409}}^1\times {\mathrm{509}}^1$

素因数の和:938

約数の個数: 16

約数和(自身を含む): 23419200

約数和(自身を除く): 4474729

約数列:

[1, 7, 13, 91, 409, 509, 2863, 3563, 5317, 6617, 37219, 46319, 208181, 1457267, 2706353, 18944471]

約数ペア:

[(1, 18944471), (7, 2706353), (13, 1457267), (91, 208181), (409, 46319), (509, 37219), (2863, 6617), (3563, 5317)]