28199440

素因数分解:

$2^4\times 5^1\times {\mathrm{352493}}^1$

素因数の和:352506

約数の個数: 20

約数和(自身を含む): 65563884

約数和(自身を除く): 37364444

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 352493, 704986, 1409972, 1762465, 2819944, 3524930, 5639888, 7049860, 14099720, 28199440]

約数ペア:

[(1, 28199440), (2, 14099720), (4, 7049860), (5, 5639888), (8, 3524930), (10, 2819944), (16, 1762465), (20, 1409972), (40, 704986), (80, 352493)]