20816845

素因数分解:

$5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{8377}}^1$

素因数の和:8460

約数の個数: 16

約数和(自身を含む): 28954368

約数和(自身を除く): 8137523

約数列:

[1, 5, 7, 35, 71, 355, 497, 2485, 8377, 41885, 58639, 293195, 594767, 2973835, 4163369, 20816845]

約数ペア:

[(1, 20816845), (5, 4163369), (7, 2973835), (35, 594767), (71, 293195), (355, 58639), (497, 41885), (2485, 8377)]