19849478

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{6491}}^1$

素因数の和:6643

約数の個数: 16

約数和(自身を含む): 32719680

約数和(自身を除く): 12870202

約数列:

[1, 2, 11, 22, 139, 278, 1529, 3058, 6491, 12982, 71401, 142802, 902249, 1804498, 9924739, 19849478]

約数ペア:

[(1, 19849478), (2, 9924739), (11, 1804498), (22, 902249), (139, 142802), (278, 71401), (1529, 12982), (3058, 6491)]