20040291

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{347}}^1$

素因数の和:413

約数の個数: 40

約数和(自身を含む): 32338944

約数和(自身を除く): 12298653

約数列:

[1, 3, 9, 23, 27, 31, 69, 81, 93, 207, 279, 347, 621, 713, 837, 1041, 1863, 2139, 2511, 3123, 6417, 7981, 9369, 10757, 19251, 23943, 28107, 32271, 57753, 71829, 96813, 215487, 247411, 290439, 646461, 742233, 871317, 2226699, 6680097, 20040291]

約数ペア:

[(1, 20040291), (3, 6680097), (9, 2226699), (23, 871317), (27, 742233), (31, 646461), (69, 290439), (81, 247411), (93, 215487), (207, 96813), (279, 71829), (347, 57753), (621, 32271), (713, 28107), (837, 23943), (1041, 19251), (1863, 10757), (2139, 9369), (2511, 7981), (3123, 6417)]