9781580

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{25741}}^1$

素因数の和:25769

約数の個数: 24

約数和(自身を含む): 21623280

約数和(自身を除く): 11841700

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 25741, 51482, 102964, 128705, 257410, 489079, 514820, 978158, 1956316, 2445395, 4890790, 9781580]

約数ペア:

[(1, 9781580), (2, 4890790), (4, 2445395), (5, 1956316), (10, 978158), (19, 514820), (20, 489079), (38, 257410), (76, 128705), (95, 102964), (190, 51482), (380, 25741)]