28820655

素因数分解:

$3^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{4889}}^1$

素因数の和:5031

約数の個数: 24

約数和(自身を含む): 50347440

約数和(自身を除く): 21526785

約数列:

[1, 3, 5, 9, 15, 45, 131, 393, 655, 1179, 1965, 4889, 5895, 14667, 24445, 44001, 73335, 220005, 640459, 1921377, 3202295, 5764131, 9606885, 28820655]

約数ペア:

[(1, 28820655), (3, 9606885), (5, 5764131), (9, 3202295), (15, 1921377), (45, 640459), (131, 220005), (393, 73335), (655, 44001), (1179, 24445), (1965, 14667), (4889, 5895)]