81171489

素因数分解:

$3^1\times 7^2\times {\mathrm{211}}^1\times {\mathrm{2617}}^1$

素因数の和:2845

約数の個数: 24

約数和(自身を含む): 126543648

約数和(自身を除く): 45372159

約数列:

[1, 3, 7, 21, 49, 147, 211, 633, 1477, 2617, 4431, 7851, 10339, 18319, 31017, 54957, 128233, 384699, 552187, 1656561, 3865309, 11595927, 27057163, 81171489]

約数ペア:

[(1, 81171489), (3, 27057163), (7, 11595927), (21, 3865309), (49, 1656561), (147, 552187), (211, 384699), (633, 128233), (1477, 54957), (2617, 31017), (4431, 18319), (7851, 10339)]