15121520

素因数分解:

$2^4\times 5^1\times {\mathrm{189019}}^1$

素因数の和:189032

約数の個数: 20

約数和(自身を含む): 35157720

約数和(自身を除く): 20036200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 189019, 378038, 756076, 945095, 1512152, 1890190, 3024304, 3780380, 7560760, 15121520]

約数ペア:

[(1, 15121520), (2, 7560760), (4, 3780380), (5, 3024304), (8, 1890190), (10, 1512152), (16, 945095), (20, 756076), (40, 378038), (80, 189019)]