18509726

素因数分解:

$2^1\times {\mathrm{109}}^1\times {\mathrm{197}}^1\times {\mathrm{431}}^1$

素因数の和:739

約数の個数: 16

約数和(自身を含む): 28226880

約数和(自身を除く): 9717154

約数列:

[1, 2, 109, 197, 218, 394, 431, 862, 21473, 42946, 46979, 84907, 93958, 169814, 9254863, 18509726]

約数ペア:

[(1, 18509726), (2, 9254863), (109, 169814), (197, 93958), (218, 84907), (394, 46979), (431, 42946), (862, 21473)]