2781459

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{1493}}^1$

素因数の和:1528

約数の個数: 20

約数和(自身を含む): 4338576

約数和(自身を除く): 1557117

約数列:

[1, 3, 9, 23, 27, 69, 81, 207, 621, 1493, 1863, 4479, 13437, 34339, 40311, 103017, 120933, 309051, 927153, 2781459]

約数ペア:

[(1, 2781459), (3, 927153), (9, 309051), (23, 120933), (27, 103017), (69, 40311), (81, 34339), (207, 13437), (621, 4479), (1493, 1863)]