15880525

素因数分解:

$5^2\times {\mathrm{31}}^2\times {\mathrm{661}}^1$

素因数の和:733

約数の個数: 18

約数和(自身を含む): 20378346

約数和(自身を除く): 4497821

約数列:

[1, 5, 25, 31, 155, 661, 775, 961, 3305, 4805, 16525, 20491, 24025, 102455, 512275, 635221, 3176105, 15880525]

約数ペア:

[(1, 15880525), (5, 3176105), (25, 635221), (31, 512275), (155, 102455), (661, 24025), (775, 20491), (961, 16525), (3305, 4805)]