28808840

素因数分解:

$2^3\times 5^1\times {\mathrm{720221}}^1$

素因数の和:720232

約数の個数: 16

約数和(自身を含む): 64819980

約数和(自身を除く): 36011140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 720221, 1440442, 2880884, 3601105, 5761768, 7202210, 14404420, 28808840]

約数ペア:

[(1, 28808840), (2, 14404420), (4, 7202210), (5, 5761768), (8, 3601105), (10, 2880884), (20, 1440442), (40, 720221)]