127385180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{489943}}^1$

素因数の和:489965

約数の個数: 24

約数和(自身を含む): 288087072

約数和(自身を除く): 160701892

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 489943, 979886, 1959772, 2449715, 4899430, 6369259, 9798860, 12738518, 25477036, 31846295, 63692590, 127385180]

約数ペア:

[(1, 127385180), (2, 63692590), (4, 31846295), (5, 25477036), (10, 12738518), (13, 9798860), (20, 6369259), (26, 4899430), (52, 2449715), (65, 1959772), (130, 979886), (260, 489943)]