28787109

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{733}}^1$

素因数の和:821

約数の個数: 32

約数和(自身を含む): 44392320

約数和(自身を除く): 15605211

約数列:

[1, 3, 13, 19, 39, 53, 57, 159, 247, 689, 733, 741, 1007, 2067, 2199, 3021, 9529, 13091, 13927, 28587, 38849, 39273, 41781, 116547, 181051, 505037, 543153, 738131, 1515111, 2214393, 9595703, 28787109]

約数ペア:

[(1, 28787109), (3, 9595703), (13, 2214393), (19, 1515111), (39, 738131), (53, 543153), (57, 505037), (159, 181051), (247, 116547), (689, 41781), (733, 39273), (741, 38849), (1007, 28587), (2067, 13927), (2199, 13091), (3021, 9529)]