28961397

素因数分解:

$3^2\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{743}}^1$

素因数の和:881

約数の個数: 24

約数和(自身を含む): 43175808

約数和(自身を除く): 14214411

約数列:

[1, 3, 9, 61, 71, 183, 213, 549, 639, 743, 2229, 4331, 6687, 12993, 38979, 45323, 52753, 135969, 158259, 407907, 474777, 3217933, 9653799, 28961397]

約数ペア:

[(1, 28961397), (3, 9653799), (9, 3217933), (61, 474777), (71, 407907), (183, 158259), (213, 135969), (549, 52753), (639, 45323), (743, 38979), (2229, 12993), (4331, 6687)]