899991

素因数分解:

$3^4\times {\mathrm{41}}^1\times {\mathrm{271}}^1$

素因数の和:324

約数の個数: 20

約数和(自身を含む): 1382304

約数和(自身を除く): 482313

約数列:

[1, 3, 9, 27, 41, 81, 123, 271, 369, 813, 1107, 2439, 3321, 7317, 11111, 21951, 33333, 99999, 299997, 899991]

約数ペア:

[(1, 899991), (3, 299997), (9, 99999), (27, 33333), (41, 21951), (81, 11111), (123, 7317), (271, 3321), (369, 2439), (813, 1107)]