20657487

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{239}}^1\times {\mathrm{613}}^1$

素因数の和:902

約数の個数: 16

約数和(自身を含む): 28293120

約数和(自身を除く): 7635633

約数列:

[1, 3, 47, 141, 239, 613, 717, 1839, 11233, 28811, 33699, 86433, 146507, 439521, 6885829, 20657487]

約数ペア:

[(1, 20657487), (3, 6885829), (47, 439521), (141, 146507), (239, 86433), (613, 33699), (717, 28811), (1839, 11233)]