20440880

素因数分解:

$2^4\times 5^1\times {\mathrm{255511}}^1$

素因数の和:255524

約数の個数: 20

約数和(自身を含む): 47525232

約数和(自身を除く): 27084352

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 255511, 511022, 1022044, 1277555, 2044088, 2555110, 4088176, 5110220, 10220440, 20440880]

約数ペア:

[(1, 20440880), (2, 10220440), (4, 5110220), (5, 4088176), (8, 2555110), (10, 2044088), (16, 1277555), (20, 1022044), (40, 511022), (80, 255511)]