28420105

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{42737}}^1$

素因数の和:42768

約数の個数: 16

約数和(自身を含む): 41028480

約数和(自身を除く): 12608375

約数列:

[1, 5, 7, 19, 35, 95, 133, 665, 42737, 213685, 299159, 812003, 1495795, 4060015, 5684021, 28420105]

約数ペア:

[(1, 28420105), (5, 5684021), (7, 4060015), (19, 1495795), (35, 812003), (95, 299159), (133, 213685), (665, 42737)]