28288215

素因数分解:

$3^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{3191}}^1$

素因数の和:3399

約数の個数: 24

約数和(自身を含む): 49297248

約数和(自身を除く): 21009033

約数列:

[1, 3, 5, 9, 15, 45, 197, 591, 985, 1773, 2955, 3191, 8865, 9573, 15955, 28719, 47865, 143595, 628627, 1885881, 3143135, 5657643, 9429405, 28288215]

約数ペア:

[(1, 28288215), (3, 9429405), (5, 5657643), (9, 3143135), (15, 1885881), (45, 628627), (197, 143595), (591, 47865), (985, 28719), (1773, 15955), (2955, 9573), (3191, 8865)]