261937557

素因数分解:

$3^4\times 7^1\times {\mathrm{461971}}^1$

素因数の和:461990

約数の個数: 20

約数和(自身を含む): 447188896

約数和(自身を除く): 185251339

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 461971, 1385913, 3233797, 4157739, 9701391, 12473217, 29104173, 37419651, 87312519, 261937557]

約数ペア:

[(1, 261937557), (3, 87312519), (7, 37419651), (9, 29104173), (21, 12473217), (27, 9701391), (63, 4157739), (81, 3233797), (189, 1385913), (567, 461971)]