77991255

素因数分解:

$3^4\times 5^1\times {\mathrm{192571}}^1$

素因数の和:192588

約数の個数: 20

約数和(自身を含む): 139807272

約数和(自身を除く): 61816017

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 192571, 577713, 962855, 1733139, 2888565, 5199417, 8665695, 15598251, 25997085, 77991255]

約数ペア:

[(1, 77991255), (3, 25997085), (5, 15598251), (9, 8665695), (15, 5199417), (27, 2888565), (45, 1733139), (81, 962855), (135, 577713), (405, 192571)]