12801700

素因数分解:

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

素因数の和:736

約数の個数: 36

約数和(自身を含む): 27936580

約数和(自身を除く): 15134880

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 313, 409, 626, 818, 1252, 1565, 1636, 2045, 3130, 4090, 6260, 7825, 8180, 10225, 15650, 20450, 31300, 40900, 128017, 256034, 512068, 640085, 1280170, 2560340, 3200425, 6400850, 12801700]

約数ペア:

[(1, 12801700), (2, 6400850), (4, 3200425), (5, 2560340), (10, 1280170), (20, 640085), (25, 512068), (50, 256034), (100, 128017), (313, 40900), (409, 31300), (626, 20450), (818, 15650), (1252, 10225), (1565, 8180), (1636, 7825), (2045, 6260), (3130, 4090)]