18867513

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47287}}^1$

素因数の和:47316

約数の個数: 16

約数和(自身を含む): 30264320

約数和(自身を除く): 11396807

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 47287, 141861, 331009, 898453, 993027, 2695359, 6289171, 18867513]

約数ペア:

[(1, 18867513), (3, 6289171), (7, 2695359), (19, 993027), (21, 898453), (57, 331009), (133, 141861), (399, 47287)]