21650840

素因数分解:

$2^3\times 5^1\times {\mathrm{541271}}^1$

素因数の和:541282

約数の個数: 16

約数和(自身を含む): 48714480

約数和(自身を除く): 27063640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 541271, 1082542, 2165084, 2706355, 4330168, 5412710, 10825420, 21650840]

約数ペア:

[(1, 21650840), (2, 10825420), (4, 5412710), (5, 4330168), (8, 2706355), (10, 2165084), (20, 1082542), (40, 541271)]