28121115

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{1301}}^1$

素因数の和:1451

約数の個数: 32

約数和(自身を含む): 49496832

約数和(自身を除く): 21375717

約数列:

[1, 3, 5, 11, 15, 33, 55, 131, 165, 393, 655, 1301, 1441, 1965, 3903, 4323, 6505, 7205, 14311, 19515, 21615, 42933, 71555, 170431, 214665, 511293, 852155, 1874741, 2556465, 5624223, 9373705, 28121115]

約数ペア:

[(1, 28121115), (3, 9373705), (5, 5624223), (11, 2556465), (15, 1874741), (33, 852155), (55, 511293), (131, 214665), (165, 170431), (393, 71555), (655, 42933), (1301, 21615), (1441, 19515), (1965, 14311), (3903, 7205), (4323, 6505)]