28978335

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{20773}}^1$

素因数の和:20815

約数の個数: 24

約数和(自身を含む): 51851904

約数和(自身を除く): 22873569

約数列:

[1, 3, 5, 9, 15, 31, 45, 93, 155, 279, 465, 1395, 20773, 62319, 103865, 186957, 311595, 643963, 934785, 1931889, 3219815, 5795667, 9659445, 28978335]

約数ペア:

[(1, 28978335), (3, 9659445), (5, 5795667), (9, 3219815), (15, 1931889), (31, 934785), (45, 643963), (93, 311595), (155, 186957), (279, 103865), (465, 62319), (1395, 20773)]