78307780

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{2113}}^1$

素因数の和:2248

約数の個数: 48

約数和(自身を含む): 175800240

約数和(自身を除く): 97492460

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 109, 170, 218, 340, 436, 545, 1090, 1853, 2113, 2180, 3706, 4226, 7412, 8452, 9265, 10565, 18530, 21130, 35921, 37060, 42260, 71842, 143684, 179605, 230317, 359210, 460634, 718420, 921268, 1151585, 2303170, 3915389, 4606340, 7830778, 15661556, 19576945, 39153890, 78307780]

約数ペア:

[(1, 78307780), (2, 39153890), (4, 19576945), (5, 15661556), (10, 7830778), (17, 4606340), (20, 3915389), (34, 2303170), (68, 1151585), (85, 921268), (109, 718420), (170, 460634), (218, 359210), (340, 230317), (436, 179605), (545, 143684), (1090, 71842), (1853, 42260), (2113, 37060), (2180, 35921), (3706, 21130), (4226, 18530), (7412, 10565), (8452, 9265)]