28678265

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{74489}}^1$

素因数の和:74512

約数の個数: 16

約数和(自身を含む): 42906240

約数和(自身を除く): 14227975

約数列:

[1, 5, 7, 11, 35, 55, 77, 385, 74489, 372445, 521423, 819379, 2607115, 4096895, 5735653, 28678265]

約数ペア:

[(1, 28678265), (5, 5735653), (7, 4096895), (11, 2607115), (35, 819379), (55, 521423), (77, 372445), (385, 74489)]