19985439

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{401}}^1\times {\mathrm{449}}^1$

素因数の和:890

約数の個数: 16

約数和(自身を含む): 27496800

約数和(自身を除く): 7511361

約数列:

[1, 3, 37, 111, 401, 449, 1203, 1347, 14837, 16613, 44511, 49839, 180049, 540147, 6661813, 19985439]

約数ペア:

[(1, 19985439), (3, 6661813), (37, 540147), (111, 180049), (401, 49839), (449, 44511), (1203, 16613), (1347, 14837)]