28020245

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{3889}}^1$

素因数の和:4036

約数の個数: 16

約数和(自身を含む): 36970560

約数和(自身を除く): 8950315

約数列:

[1, 5, 11, 55, 131, 655, 1441, 3889, 7205, 19445, 42779, 213895, 509459, 2547295, 5604049, 28020245]

約数ペア:

[(1, 28020245), (5, 5604049), (11, 2547295), (55, 509459), (131, 213895), (655, 42779), (1441, 19445), (3889, 7205)]