205718121

素因数分解:

$3^2\times 7^2\times {\mathrm{193}}^1\times {\mathrm{2417}}^1$

素因数の和:2630

約数の個数: 36

約数和(自身を含む): 347597172

約数和(自身を除く): 141879051

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 193, 441, 579, 1351, 1737, 2417, 4053, 7251, 9457, 12159, 16919, 21753, 28371, 50757, 85113, 118433, 152271, 355299, 466481, 1065897, 1399443, 3265367, 4198329, 9796101, 22857569, 29388303, 68572707, 205718121]

約数ペア:

[(1, 205718121), (3, 68572707), (7, 29388303), (9, 22857569), (21, 9796101), (49, 4198329), (63, 3265367), (147, 1399443), (193, 1065897), (441, 466481), (579, 355299), (1351, 152271), (1737, 118433), (2417, 85113), (4053, 50757), (7251, 28371), (9457, 21753), (12159, 16919)]