28386760

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{911}}^1$

素因数の和:982

約数の個数: 64

約数和(自身を含む): 68947200

約数和(自身を除く): 40560440

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 41, 76, 82, 95, 152, 164, 190, 205, 328, 380, 410, 760, 779, 820, 911, 1558, 1640, 1822, 3116, 3644, 3895, 4555, 6232, 7288, 7790, 9110, 15580, 17309, 18220, 31160, 34618, 36440, 37351, 69236, 74702, 86545, 138472, 149404, 173090, 186755, 298808, 346180, 373510, 692360, 709669, 747020, 1419338, 1494040, 2838676, 3548345, 5677352, 7096690, 14193380, 28386760]

約数ペア:

[(1, 28386760), (2, 14193380), (4, 7096690), (5, 5677352), (8, 3548345), (10, 2838676), (19, 1494040), (20, 1419338), (38, 747020), (40, 709669), (41, 692360), (76, 373510), (82, 346180), (95, 298808), (152, 186755), (164, 173090), (190, 149404), (205, 138472), (328, 86545), (380, 74702), (410, 69236), (760, 37351), (779, 36440), (820, 34618), (911, 31160), (1558, 18220), (1640, 17309), (1822, 15580), (3116, 9110), (3644, 7790), (3895, 7288), (4555, 6232)]