18897626

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{431}}^1\times {\mathrm{1993}}^1$

素因数の和:2437

約数の個数: 16

約数和(自身を含む): 31010688

約数和(自身を除く): 12113062

約数列:

[1, 2, 11, 22, 431, 862, 1993, 3986, 4741, 9482, 21923, 43846, 858983, 1717966, 9448813, 18897626]

約数ペア:

[(1, 18897626), (2, 9448813), (11, 1717966), (22, 858983), (431, 43846), (862, 21923), (1993, 9482), (3986, 4741)]