17980966

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{419}}^1\times {\mathrm{499}}^1$

素因数の和:963

約数の個数: 16

約数和(自身を含む): 27720000

約数和(自身を除く): 9739034

約数列:

[1, 2, 43, 86, 419, 499, 838, 998, 18017, 21457, 36034, 42914, 209081, 418162, 8990483, 17980966]

約数ペア:

[(1, 17980966), (2, 8990483), (43, 418162), (86, 209081), (419, 42914), (499, 36034), (838, 21457), (998, 18017)]