261319689

素因数分解:

$3^4\times {\mathrm{71}}^1\times {\mathrm{45439}}^1$

素因数の和:45522

約数の個数: 20

約数和(自身を含む): 395873280

約数和(自身を除く): 134553591

約数列:

[1, 3, 9, 27, 71, 81, 213, 639, 1917, 5751, 45439, 136317, 408951, 1226853, 3226169, 3680559, 9678507, 29035521, 87106563, 261319689]

約数ペア:

[(1, 261319689), (3, 87106563), (9, 29035521), (27, 9678507), (71, 3680559), (81, 3226169), (213, 1226853), (639, 408951), (1917, 136317), (5751, 45439)]