20257557

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{4463}}^1$

素因数の和:4572

約数の個数: 16

約数和(自身を含む): 28926720

約数和(自身を除く): 8669163

約数列:

[1, 3, 17, 51, 89, 267, 1513, 4463, 4539, 13389, 75871, 227613, 397207, 1191621, 6752519, 20257557]

約数ペア:

[(1, 20257557), (3, 6752519), (17, 1191621), (51, 397207), (89, 227613), (267, 75871), (1513, 13389), (4463, 4539)]