20690565

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{193}}^1\times {\mathrm{1021}}^1$

素因数の和:1229

約数の個数: 32

約数和(自身を含む): 38067456

約数和(自身を除く): 17376891

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 193, 579, 965, 1021, 1351, 2895, 3063, 4053, 5105, 6755, 7147, 15315, 20265, 21441, 35735, 107205, 197053, 591159, 985265, 1379371, 2955795, 4138113, 6896855, 20690565]

約数ペア:

[(1, 20690565), (3, 6896855), (5, 4138113), (7, 2955795), (15, 1379371), (21, 985265), (35, 591159), (105, 197053), (193, 107205), (579, 35735), (965, 21441), (1021, 20265), (1351, 15315), (2895, 7147), (3063, 6755), (4053, 5105)]