19718818

素因数分解:

$2^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{10133}}^1$

素因数の和:10281

約数の個数: 16

約数和(自身を含む): 34050240

約数和(自身を除く): 14331422

約数列:

[1, 2, 7, 14, 139, 278, 973, 1946, 10133, 20266, 70931, 141862, 1408487, 2816974, 9859409, 19718818]

約数ペア:

[(1, 19718818), (2, 9859409), (7, 2816974), (14, 1408487), (139, 141862), (278, 70931), (973, 20266), (1946, 10133)]