20809902008

素因数分解:

$2^3\times 7^1\times {\mathrm{37}}^1\times {\mathrm{211}}^1\times {\mathrm{47599}}^1$

素因数の和:47860

約数の個数: 64

約数和(自身を含む): 46015872000

約数和(自身を除く): 25205969992

約数列:

[1, 2, 4, 7, 8, 14, 28, 37, 56, 74, 148, 211, 259, 296, 422, 518, 844, 1036, 1477, 1688, 2072, 2954, 5908, 7807, 11816, 15614, 31228, 47599, 54649, 62456, 95198, 109298, 190396, 218596, 333193, 380792, 437192, 666386, 1332772, 1761163, 2665544, 3522326, 7044652, 10043389, 12328141, 14089304, 20086778, 24656282, 40173556, 49312564, 70303723, 80347112, 98625128, 140607446, 281214892, 371605393, 562429784, 743210786, 1486421572, 2601237751, 2972843144, 5202475502, 10404951004, 20809902008]

約数ペア:

[(1, 20809902008), (2, 10404951004), (4, 5202475502), (7, 2972843144), (8, 2601237751), (14, 1486421572), (28, 743210786), (37, 562429784), (56, 371605393), (74, 281214892), (148, 140607446), (211, 98625128), (259, 80347112), (296, 70303723), (422, 49312564), (518, 40173556), (844, 24656282), (1036, 20086778), (1477, 14089304), (1688, 12328141), (2072, 10043389), (2954, 7044652), (5908, 3522326), (7807, 2665544), (11816, 1761163), (15614, 1332772), (31228, 666386), (47599, 437192), (54649, 380792), (62456, 333193), (95198, 218596), (109298, 190396)]