81136161

素因数分解:

$3^4\times {\mathrm{61}}^1\times {\mathrm{16421}}^1$

素因数の和:16494

約数の個数: 20

約数和(自身を含む): 123197844

約数和(自身を除く): 42061683

約数列:

[1, 3, 9, 27, 61, 81, 183, 549, 1647, 4941, 16421, 49263, 147789, 443367, 1001681, 1330101, 3005043, 9015129, 27045387, 81136161]

約数ペア:

[(1, 81136161), (3, 27045387), (9, 9015129), (27, 3005043), (61, 1330101), (81, 1001681), (183, 443367), (549, 147789), (1647, 49263), (4941, 16421)]