20865783

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{4597}}^1$

素因数の和:4706

約数の個数: 16

約数和(自身を含む): 29795040

約数和(自身を除く): 8929257

約数列:

[1, 3, 17, 51, 89, 267, 1513, 4539, 4597, 13791, 78149, 234447, 409133, 1227399, 6955261, 20865783]

約数ペア:

[(1, 20865783), (3, 6955261), (17, 1227399), (51, 409133), (89, 234447), (267, 78149), (1513, 13791), (4539, 4597)]