254345217

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{179}}^1\times {\mathrm{953}}^1$

素因数の和:1213

約数の個数: 32

約数和(自身を含む): 395642880

約数和(自身を除く): 141297663

約数列:

[1, 3, 7, 21, 71, 179, 213, 497, 537, 953, 1253, 1491, 2859, 3759, 6671, 12709, 20013, 38127, 67663, 88963, 170587, 202989, 266889, 473641, 511761, 1194109, 1420923, 3582327, 12111677, 36335031, 84781739, 254345217]

約数ペア:

[(1, 254345217), (3, 84781739), (7, 36335031), (21, 12111677), (71, 3582327), (179, 1420923), (213, 1194109), (497, 511761), (537, 473641), (953, 266889), (1253, 202989), (1491, 170587), (2859, 88963), (3759, 67663), (6671, 38127), (12709, 20013)]