2560340

素因数分解:

$2^2\times 5^1\times {\mathrm{313}}^1\times {\mathrm{409}}^1$

素因数の和:731

約数の個数: 24

約数和(自身を含む): 5407080

約数和(自身を除く): 2846740

約数列:

[1, 2, 4, 5, 10, 20, 313, 409, 626, 818, 1252, 1565, 1636, 2045, 3130, 4090, 6260, 8180, 128017, 256034, 512068, 640085, 1280170, 2560340]

約数ペア:

[(1, 2560340), (2, 1280170), (4, 640085), (5, 512068), (10, 256034), (20, 128017), (313, 8180), (409, 6260), (626, 4090), (818, 3130), (1252, 2045), (1565, 1636)]