20660003

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{9871}}^1$

素因数の和:9914

約数の個数: 16

約数和(自身を含む): 26535936

約数和(自身を除く): 5875933

約数列:

[1, 7, 13, 23, 91, 161, 299, 2093, 9871, 69097, 128323, 227033, 898261, 1589231, 2951429, 20660003]

約数ペア:

[(1, 20660003), (7, 2951429), (13, 1589231), (23, 898261), (91, 227033), (161, 128323), (299, 69097), (2093, 9871)]