256804569

素因数分解:

$3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{86729}}^1$

素因数の和:86789

約数の個数: 24

約数和(自身を含む): 432956160

約数和(自身を除く): 176151591

約数列:

[1, 3, 7, 9, 21, 47, 63, 141, 329, 423, 987, 2961, 86729, 260187, 607103, 780561, 1821309, 4076263, 5463927, 12228789, 28533841, 36686367, 85601523, 256804569]

約数ペア:

[(1, 256804569), (3, 85601523), (7, 36686367), (9, 28533841), (21, 12228789), (47, 5463927), (63, 4076263), (141, 1821309), (329, 780561), (423, 607103), (987, 260187), (2961, 86729)]