51206800

素因数分解:

$2^4\times 5^2\times {\mathrm{313}}^1\times {\mathrm{409}}^1$

素因数の和:740

約数の個数: 60

約数和(自身を含む): 123719140

約数和(自身を除く): 72512340

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 313, 400, 409, 626, 818, 1252, 1565, 1636, 2045, 2504, 3130, 3272, 4090, 5008, 6260, 6544, 7825, 8180, 10225, 12520, 15650, 16360, 20450, 25040, 31300, 32720, 40900, 62600, 81800, 125200, 128017, 163600, 256034, 512068, 640085, 1024136, 1280170, 2048272, 2560340, 3200425, 5120680, 6400850, 10241360, 12801700, 25603400, 51206800]

約数ペア:

[(1, 51206800), (2, 25603400), (4, 12801700), (5, 10241360), (8, 6400850), (10, 5120680), (16, 3200425), (20, 2560340), (25, 2048272), (40, 1280170), (50, 1024136), (80, 640085), (100, 512068), (200, 256034), (313, 163600), (400, 128017), (409, 125200), (626, 81800), (818, 62600), (1252, 40900), (1565, 32720), (1636, 31300), (2045, 25040), (2504, 20450), (3130, 16360), (3272, 15650), (4090, 12520), (5008, 10225), (6260, 8180), (6544, 7825)]