19889859

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{157}}^1\times {\mathrm{349}}^1$

素因数の和:531

約数の個数: 24

約数和(自身を含む): 29419600

約数和(自身を除く): 9529741

約数列:

[1, 3, 11, 33, 121, 157, 349, 363, 471, 1047, 1727, 3839, 5181, 11517, 18997, 42229, 54793, 56991, 126687, 164379, 602723, 1808169, 6629953, 19889859]

約数ペア:

[(1, 19889859), (3, 6629953), (11, 1808169), (33, 602723), (121, 164379), (157, 126687), (349, 56991), (363, 54793), (471, 42229), (1047, 18997), (1727, 11517), (3839, 5181)]