28657263

素因数分解:

$3^1\times {\mathrm{19}}^2\times {\mathrm{47}}^1\times {\mathrm{563}}^1$

素因数の和:651

約数の個数: 24

約数和(自身を含む): 41257728

約数和(自身を除く): 12600465

約数列:

[1, 3, 19, 47, 57, 141, 361, 563, 893, 1083, 1689, 2679, 10697, 16967, 26461, 32091, 50901, 79383, 203243, 502759, 609729, 1508277, 9552421, 28657263]

約数ペア:

[(1, 28657263), (3, 9552421), (19, 1508277), (47, 609729), (57, 502759), (141, 203243), (361, 79383), (563, 50901), (893, 32091), (1083, 26461), (1689, 16967), (2679, 10697)]