198840560

素因数分解:

$2^4\times 5^1\times {\mathrm{2485507}}^1$

素因数の和:2485520

約数の個数: 20

約数和(自身を含む): 462304488

約数和(自身を除く): 263463928

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2485507, 4971014, 9942028, 12427535, 19884056, 24855070, 39768112, 49710140, 99420280, 198840560]

約数ペア:

[(1, 198840560), (2, 99420280), (4, 49710140), (5, 39768112), (8, 24855070), (10, 19884056), (16, 12427535), (20, 9942028), (40, 4971014), (80, 2485507)]