820976

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{3947}}^1$

素因数の和:3968

約数の個数: 20

約数和(自身を含む): 1713432

約数和(自身を除く): 892456

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 3947, 7894, 15788, 31576, 51311, 63152, 102622, 205244, 410488, 820976]

約数ペア:

[(1, 820976), (2, 410488), (4, 205244), (8, 102622), (13, 63152), (16, 51311), (26, 31576), (52, 15788), (104, 7894), (208, 3947)]