20378704

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{17939}}^1$

素因数の和:18018

約数の個数: 20

約数和(自身を含む): 40042080

約数和(自身を除く): 19663376

約数列:

[1, 2, 4, 8, 16, 71, 142, 284, 568, 1136, 17939, 35878, 71756, 143512, 287024, 1273669, 2547338, 5094676, 10189352, 20378704]

約数ペア:

[(1, 20378704), (2, 10189352), (4, 5094676), (8, 2547338), (16, 1273669), (71, 287024), (142, 143512), (284, 71756), (568, 35878), (1136, 17939)]