257120163

素因数分解:

$3^4\times {\mathrm{433}}^1\times {\mathrm{7331}}^1$

素因数の和:7776

約数の個数: 20

約数和(自身を含む): 385032648

約数和(自身を除く): 127912485

約数列:

[1, 3, 9, 27, 81, 433, 1299, 3897, 7331, 11691, 21993, 35073, 65979, 197937, 593811, 3174323, 9522969, 28568907, 85706721, 257120163]

約数ペア:

[(1, 257120163), (3, 85706721), (9, 28568907), (27, 9522969), (81, 3174323), (433, 593811), (1299, 197937), (3897, 65979), (7331, 35073), (11691, 21993)]