20981556

素因数分解:

$2^2\times 3^2\times {\mathrm{582821}}^1$

素因数の和:582831

約数の個数: 18

約数和(自身を含む): 53036802

約数和(自身を除く): 32055246

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 582821, 1165642, 1748463, 2331284, 3496926, 5245389, 6993852, 10490778, 20981556]

約数ペア:

[(1, 20981556), (2, 10490778), (3, 6993852), (4, 5245389), (6, 3496926), (9, 2331284), (12, 1748463), (18, 1165642), (36, 582821)]