77280987

素因数分解:

$3^1\times 7^4\times {\mathrm{10729}}^1$

素因数の和:10760

約数の個数: 20

約数和(自身を含む): 120218920

約数和(自身を除く): 42937933

約数列:

[1, 3, 7, 21, 49, 147, 343, 1029, 2401, 7203, 10729, 32187, 75103, 225309, 525721, 1577163, 3680047, 11040141, 25760329, 77280987]

約数ペア:

[(1, 77280987), (3, 25760329), (7, 11040141), (21, 3680047), (49, 1577163), (147, 525721), (343, 225309), (1029, 75103), (2401, 32187), (7203, 10729)]