18947871

素因数分解:

$3^3\times {\mathrm{53}}^1\times {\mathrm{13241}}^1$

素因数の和:13303

約数の個数: 16

約数和(自身を含む): 28602720

約数和(自身を除く): 9654849

約数列:

[1, 3, 9, 27, 53, 159, 477, 1431, 13241, 39723, 119169, 357507, 701773, 2105319, 6315957, 18947871]

約数ペア:

[(1, 18947871), (3, 6315957), (9, 2105319), (27, 701773), (53, 357507), (159, 119169), (477, 39723), (1431, 13241)]