12747213

素因数分解:

$3^4\times {\mathrm{241}}^1\times {\mathrm{653}}^1$

素因数の和:906

約数の個数: 20

約数和(自身を含む): 19150428

約数和(自身を除く): 6403215

約数列:

[1, 3, 9, 27, 81, 241, 653, 723, 1959, 2169, 5877, 6507, 17631, 19521, 52893, 157373, 472119, 1416357, 4249071, 12747213]

約数ペア:

[(1, 12747213), (3, 4249071), (9, 1416357), (27, 472119), (81, 157373), (241, 52893), (653, 19521), (723, 17631), (1959, 6507), (2169, 5877)]