28721364

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{20113}}^1$

素因数の和:20144

約数の個数: 48

約数和(自身を含む): 81099648

約数和(自身を除く): 52378284

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 17, 21, 28, 34, 42, 51, 68, 84, 102, 119, 204, 238, 357, 476, 714, 1428, 20113, 40226, 60339, 80452, 120678, 140791, 241356, 281582, 341921, 422373, 563164, 683842, 844746, 1025763, 1367684, 1689492, 2051526, 2393447, 4103052, 4786894, 7180341, 9573788, 14360682, 28721364]

約数ペア:

[(1, 28721364), (2, 14360682), (3, 9573788), (4, 7180341), (6, 4786894), (7, 4103052), (12, 2393447), (14, 2051526), (17, 1689492), (21, 1367684), (28, 1025763), (34, 844746), (42, 683842), (51, 563164), (68, 422373), (84, 341921), (102, 281582), (119, 241356), (204, 140791), (238, 120678), (357, 80452), (476, 60339), (714, 40226), (1428, 20113)]