28512009

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{331}}^1\times {\mathrm{563}}^1$

素因数の和:917

約数の個数: 24

約数和(自身を含む): 43816032

約数和(自身を除く): 15304023

約数列:

[1, 3, 9, 17, 51, 153, 331, 563, 993, 1689, 2979, 5067, 5627, 9571, 16881, 28713, 50643, 86139, 186353, 559059, 1677177, 3168001, 9504003, 28512009]

約数ペア:

[(1, 28512009), (3, 9504003), (9, 3168001), (17, 1677177), (51, 559059), (153, 186353), (331, 86139), (563, 50643), (993, 28713), (1689, 16881), (2979, 9571), (5067, 5627)]