51166780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{109}}^1\times {\mathrm{479}}^1$

素因数の和:611

約数の個数: 72

約数和(自身を含む): 126403200

約数和(自身を除く): 75236420

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 109, 140, 196, 218, 245, 436, 479, 490, 545, 763, 958, 980, 1090, 1526, 1916, 2180, 2395, 3052, 3353, 3815, 4790, 5341, 6706, 7630, 9580, 10682, 13412, 15260, 16765, 21364, 23471, 26705, 33530, 46942, 52211, 53410, 67060, 93884, 104422, 106820, 117355, 208844, 234710, 261055, 365477, 469420, 522110, 730954, 1044220, 1461908, 1827385, 2558339, 3654770, 5116678, 7309540, 10233356, 12791695, 25583390, 51166780]

約数ペア:

[(1, 51166780), (2, 25583390), (4, 12791695), (5, 10233356), (7, 7309540), (10, 5116678), (14, 3654770), (20, 2558339), (28, 1827385), (35, 1461908), (49, 1044220), (70, 730954), (98, 522110), (109, 469420), (140, 365477), (196, 261055), (218, 234710), (245, 208844), (436, 117355), (479, 106820), (490, 104422), (545, 93884), (763, 67060), (958, 53410), (980, 52211), (1090, 46942), (1526, 33530), (1916, 26705), (2180, 23471), (2395, 21364), (3052, 16765), (3353, 15260), (3815, 13412), (4790, 10682), (5341, 9580), (6706, 7630)]