20280488

素因数分解:

$2^3\times {\mathrm{199}}^1\times {\mathrm{12739}}^1$

素因数の和:12944

約数の個数: 16

約数和(自身を含む): 38220000

約数和(自身を除く): 17939512

約数列:

[1, 2, 4, 8, 199, 398, 796, 1592, 12739, 25478, 50956, 101912, 2535061, 5070122, 10140244, 20280488]

約数ペア:

[(1, 20280488), (2, 10140244), (4, 5070122), (8, 2535061), (199, 101912), (398, 50956), (796, 25478), (1592, 12739)]