21634960

素因数分解:

$2^4\times 5^1\times {\mathrm{270437}}^1$

素因数の和:270450

約数の個数: 20

約数和(自身を含む): 50301468

約数和(自身を除く): 28666508

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 270437, 540874, 1081748, 1352185, 2163496, 2704370, 4326992, 5408740, 10817480, 21634960]

約数ペア:

[(1, 21634960), (2, 10817480), (4, 5408740), (5, 4326992), (8, 2704370), (10, 2163496), (16, 1352185), (20, 1081748), (40, 540874), (80, 270437)]