20781232

素因数分解:

$2^4\times {\mathrm{577}}^1\times {\mathrm{2251}}^1$

素因数の和:2836

約数の個数: 20

約数和(自身を含む): 40351336

約数和(自身を除く): 19570104

約数列:

[1, 2, 4, 8, 16, 577, 1154, 2251, 2308, 4502, 4616, 9004, 9232, 18008, 36016, 1298827, 2597654, 5195308, 10390616, 20781232]

約数ペア:

[(1, 20781232), (2, 10390616), (4, 5195308), (8, 2597654), (16, 1298827), (577, 36016), (1154, 18008), (2251, 9232), (2308, 9004), (4502, 4616)]