19957788

素因数分解:

$2^2\times 3^2\times {\mathrm{554383}}^1$

素因数の和:554393

約数の個数: 18

約数和(自身を含む): 50448944

約数和(自身を除く): 30491156

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 554383, 1108766, 1663149, 2217532, 3326298, 4989447, 6652596, 9978894, 19957788]

約数ペア:

[(1, 19957788), (2, 9978894), (3, 6652596), (4, 4989447), (6, 3326298), (9, 2217532), (12, 1663149), (18, 1108766), (36, 554383)]