12440840

素因数分解:

$2^3\times 5^1\times {\mathrm{311021}}^1$

素因数の和:311032

約数の個数: 16

約数和(自身を含む): 27991980

約数和(自身を除く): 15551140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 311021, 622042, 1244084, 1555105, 2488168, 3110210, 6220420, 12440840]

約数ペア:

[(1, 12440840), (2, 6220420), (4, 3110210), (5, 2488168), (8, 1555105), (10, 1244084), (20, 622042), (40, 311021)]