261620

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{127}}^1$

素因数の和:239

約数の個数: 24

約数和(自身を含む): 559104

約数和(自身を除く): 297484

約数列:

[1, 2, 4, 5, 10, 20, 103, 127, 206, 254, 412, 508, 515, 635, 1030, 1270, 2060, 2540, 13081, 26162, 52324, 65405, 130810, 261620]

約数ペア:

[(1, 261620), (2, 130810), (4, 65405), (5, 52324), (10, 26162), (20, 13081), (103, 2540), (127, 2060), (206, 1270), (254, 1030), (412, 635), (508, 515)]