217689039

素因数分解:

$3^4\times {\mathrm{107}}^1\times {\mathrm{25117}}^1$

素因数の和:25236

約数の個数: 20

約数和(自身を含む): 328242024

約数和(自身を除く): 110552985

約数列:

[1, 3, 9, 27, 81, 107, 321, 963, 2889, 8667, 25117, 75351, 226053, 678159, 2034477, 2687519, 8062557, 24187671, 72563013, 217689039]

約数ペア:

[(1, 217689039), (3, 72563013), (9, 24187671), (27, 8062557), (81, 2687519), (107, 2034477), (321, 678159), (963, 226053), (2889, 75351), (8667, 25117)]