21075957

素因数分解:

$3^4\times 7^1\times {\mathrm{37171}}^1$

素因数の和:37190

約数の個数: 20

約数和(自身を含む): 35982496

約数和(自身を除く): 14906539

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 37171, 111513, 260197, 334539, 780591, 1003617, 2341773, 3010851, 7025319, 21075957]

約数ペア:

[(1, 21075957), (3, 7025319), (7, 3010851), (9, 2341773), (21, 1003617), (27, 780591), (63, 334539), (81, 260197), (189, 111513), (567, 37171)]