8901680

素因数分解:

$2^4\times 5^1\times {\mathrm{111271}}^1$

素因数の和:111284

約数の個数: 20

約数和(自身を含む): 20696592

約数和(自身を除く): 11794912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 111271, 222542, 445084, 556355, 890168, 1112710, 1780336, 2225420, 4450840, 8901680]

約数ペア:

[(1, 8901680), (2, 4450840), (4, 2225420), (5, 1780336), (8, 1112710), (10, 890168), (16, 556355), (20, 445084), (40, 222542), (80, 111271)]