21890985

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{85847}}^1$

素因数の和:85872

約数の個数: 16

約数和(自身を含む): 37086336

約数和(自身を除く): 15195351

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 85847, 257541, 429235, 1287705, 1459399, 4378197, 7296995, 21890985]

約数ペア:

[(1, 21890985), (3, 7296995), (5, 4378197), (15, 1459399), (17, 1287705), (51, 429235), (85, 257541), (255, 85847)]