20491668

素因数分解:

$2^2\times 3^2\times {\mathrm{569213}}^1$

素因数の和:569223

約数の個数: 18

約数和(自身を含む): 51798474

約数和(自身を除く): 31306806

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 569213, 1138426, 1707639, 2276852, 3415278, 5122917, 6830556, 10245834, 20491668]

約数ペア:

[(1, 20491668), (2, 10245834), (3, 6830556), (4, 5122917), (6, 3415278), (9, 2276852), (12, 1707639), (18, 1138426), (36, 569213)]