28281879

素因数分解:

$3^4\times {\mathrm{73}}^1\times {\mathrm{4783}}^1$

素因数の和:4868

約数の個数: 20

約数和(自身を含む): 42835936

約数和(自身を除く): 14554057

約数列:

[1, 3, 9, 27, 73, 81, 219, 657, 1971, 4783, 5913, 14349, 43047, 129141, 349159, 387423, 1047477, 3142431, 9427293, 28281879]

約数ペア:

[(1, 28281879), (3, 9427293), (9, 3142431), (27, 1047477), (73, 387423), (81, 349159), (219, 129141), (657, 43047), (1971, 14349), (4783, 5913)]