19728007

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{59}}^1\times {\mathrm{89}}^1$

素因数の和:195

約数の個数: 24

約数和(自身を含む): 23209200

約数和(自身を除く): 3481193

約数列:

[1, 13, 17, 59, 89, 221, 289, 767, 1003, 1157, 1513, 3757, 5251, 13039, 17051, 19669, 25721, 68263, 89267, 221663, 334373, 1160471, 1517539, 19728007]

約数ペア:

[(1, 19728007), (13, 1517539), (17, 1160471), (59, 334373), (89, 221663), (221, 89267), (289, 68263), (767, 25721), (1003, 19669), (1157, 17051), (1513, 13039), (3757, 5251)]