19967738

素因数分解:

$2^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{809}}^1$

素因数の和:902

約数の個数: 32

約数和(自身を含む): 35925120

約数和(自身を除く): 15957382

約数列:

[1, 2, 7, 14, 41, 43, 82, 86, 287, 301, 574, 602, 809, 1618, 1763, 3526, 5663, 11326, 12341, 24682, 33169, 34787, 66338, 69574, 232183, 243509, 464366, 487018, 1426267, 2852534, 9983869, 19967738]

約数ペア:

[(1, 19967738), (2, 9983869), (7, 2852534), (14, 1426267), (41, 487018), (43, 464366), (82, 243509), (86, 232183), (287, 69574), (301, 66338), (574, 34787), (602, 33169), (809, 24682), (1618, 12341), (1763, 11326), (3526, 5663)]