19915994

素因数分解:

$2^1\times 7^1\times {\mathrm{151}}^1\times {\mathrm{9421}}^1$

素因数の和:9581

約数の個数: 16

約数和(自身を含む): 34371456

約数和(自身を除く): 14455462

約数列:

[1, 2, 7, 14, 151, 302, 1057, 2114, 9421, 18842, 65947, 131894, 1422571, 2845142, 9957997, 19915994]

約数ペア:

[(1, 19915994), (2, 9957997), (7, 2845142), (14, 1422571), (151, 131894), (302, 65947), (1057, 18842), (2114, 9421)]