2558439

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{197}}^1$

素因数の和:256

約数の個数: 32

約数和(自身を含む): 4213440

約数和(自身を除く): 1655001

約数列:

[1, 3, 9, 13, 27, 37, 39, 111, 117, 197, 333, 351, 481, 591, 999, 1443, 1773, 2561, 4329, 5319, 7289, 7683, 12987, 21867, 23049, 65601, 69147, 94757, 196803, 284271, 852813, 2558439]

約数ペア:

[(1, 2558439), (3, 852813), (9, 284271), (13, 196803), (27, 94757), (37, 69147), (39, 65601), (111, 23049), (117, 21867), (197, 12987), (333, 7683), (351, 7289), (481, 5319), (591, 4329), (999, 2561), (1443, 1773)]