28678959

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{1213}}^1$

素因数の和:1327

約数の個数: 24

約数和(自身を含む): 43179552

約数和(自身を除く): 14500593

約数列:

[1, 3, 9, 37, 71, 111, 213, 333, 639, 1213, 2627, 3639, 7881, 10917, 23643, 44881, 86123, 134643, 258369, 403929, 775107, 3186551, 9559653, 28678959]

約数ペア:

[(1, 28678959), (3, 9559653), (9, 3186551), (37, 775107), (71, 403929), (111, 258369), (213, 134643), (333, 86123), (639, 44881), (1213, 23643), (2627, 10917), (3639, 7881)]