21893788

素因数分解:

$2^2\times 7^2\times {\mathrm{37}}^1\times {\mathrm{3019}}^1$

素因数の和:3074

約数の個数: 36

約数和(自身を含む): 45789240

約数和(自身を除く): 23895452

約数列:

[1, 2, 4, 7, 14, 28, 37, 49, 74, 98, 148, 196, 259, 518, 1036, 1813, 3019, 3626, 6038, 7252, 12076, 21133, 42266, 84532, 111703, 147931, 223406, 295862, 446812, 591724, 781921, 1563842, 3127684, 5473447, 10946894, 21893788]

約数ペア:

[(1, 21893788), (2, 10946894), (4, 5473447), (7, 3127684), (14, 1563842), (28, 781921), (37, 591724), (49, 446812), (74, 295862), (98, 223406), (148, 147931), (196, 111703), (259, 84532), (518, 42266), (1036, 21133), (1813, 12076), (3019, 7252), (3626, 6038)]