7781913

素因数分解:

$3^4\times {\mathrm{191}}^1\times {\mathrm{503}}^1$

素因数の和:706

約数の個数: 20

約数和(自身を含む): 11708928

約数和(自身を除く): 3927015

約数列:

[1, 3, 9, 27, 81, 191, 503, 573, 1509, 1719, 4527, 5157, 13581, 15471, 40743, 96073, 288219, 864657, 2593971, 7781913]

約数ペア:

[(1, 7781913), (3, 2593971), (9, 864657), (27, 288219), (81, 96073), (191, 40743), (503, 15471), (573, 13581), (1509, 5157), (1719, 4527)]