20785761440

素因数分解:

$2^5\times 5^1\times {\mathrm{129911009}}^1$

素因数の和:129911024

約数の個数: 24

約数和(自身を含む): 49106361780

約数和(自身を除く): 28320600340

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 129911009, 259822018, 519644036, 649555045, 1039288072, 1299110090, 2078576144, 2598220180, 4157152288, 5196440360, 10392880720, 20785761440]

約数ペア:

[(1, 20785761440), (2, 10392880720), (4, 5196440360), (5, 4157152288), (8, 2598220180), (10, 2078576144), (16, 1299110090), (20, 1039288072), (32, 649555045), (40, 519644036), (80, 259822018), (160, 129911009)]