81072845

素因数分解:

$5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1\times {\mathrm{523}}^1$

素因数の和:681

約数の個数: 32

約数和(自身を含む): 115095552

約数和(自身を除く): 34022707

約数列:

[1, 5, 7, 35, 43, 103, 215, 301, 515, 523, 721, 1505, 2615, 3605, 3661, 4429, 18305, 22145, 22489, 31003, 53869, 112445, 155015, 157423, 269345, 377083, 787115, 1885415, 2316367, 11581835, 16214569, 81072845]

約数ペア:

[(1, 81072845), (5, 16214569), (7, 11581835), (35, 2316367), (43, 1885415), (103, 787115), (215, 377083), (301, 269345), (515, 157423), (523, 155015), (721, 112445), (1505, 53869), (2615, 31003), (3605, 22489), (3661, 22145), (4429, 18305)]