261130239

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{523}}^1\times {\mathrm{1913}}^1$

素因数の和:2471

約数の個数: 24

約数和(自身を含む): 391145040

約数和(自身を除く): 130014801

約数列:

[1, 3, 9, 29, 87, 261, 523, 1569, 1913, 4707, 5739, 15167, 17217, 45501, 55477, 136503, 166431, 499293, 1000499, 3001497, 9004491, 29014471, 87043413, 261130239]

約数ペア:

[(1, 261130239), (3, 87043413), (9, 29014471), (29, 9004491), (87, 3001497), (261, 1000499), (523, 499293), (1569, 166431), (1913, 136503), (4707, 55477), (5739, 45501), (15167, 17217)]