20994015

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{179}}^1\times {\mathrm{1117}}^1$

素因数の和:1311

約数の個数: 32

約数和(自身を含む): 38638080

約数和(自身を除く): 17644065

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 179, 537, 895, 1117, 1253, 2685, 3351, 3759, 5585, 6265, 7819, 16755, 18795, 23457, 39095, 117285, 199943, 599829, 999715, 1399601, 2999145, 4198803, 6998005, 20994015]

約数ペア:

[(1, 20994015), (3, 6998005), (5, 4198803), (7, 2999145), (15, 1399601), (21, 999715), (35, 599829), (105, 199943), (179, 117285), (537, 39095), (895, 23457), (1117, 18795), (1253, 16755), (2685, 7819), (3351, 6265), (3759, 5585)]