21691768

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^2\times {\mathrm{29}}^1\times {\mathrm{37}}^1$

素因数の和:117

約数の個数: 96

約数和(自身を含む): 52120800

約数和(自身を除く): 30429032

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 29, 37, 38, 56, 58, 74, 76, 116, 133, 148, 152, 203, 232, 259, 266, 296, 361, 406, 518, 532, 551, 703, 722, 812, 1036, 1064, 1073, 1102, 1406, 1444, 1624, 2072, 2146, 2204, 2527, 2812, 2888, 3857, 4292, 4408, 4921, 5054, 5624, 7511, 7714, 8584, 9842, 10108, 10469, 13357, 15022, 15428, 19684, 20216, 20387, 20938, 26714, 30044, 30856, 39368, 40774, 41876, 53428, 60088, 73283, 81548, 83752, 93499, 106856, 142709, 146566, 163096, 186998, 285418, 293132, 373996, 387353, 570836, 586264, 747992, 774706, 1141672, 1549412, 2711471, 3098824, 5422942, 10845884, 21691768]

約数ペア:

[(1, 21691768), (2, 10845884), (4, 5422942), (7, 3098824), (8, 2711471), (14, 1549412), (19, 1141672), (28, 774706), (29, 747992), (37, 586264), (38, 570836), (56, 387353), (58, 373996), (74, 293132), (76, 285418), (116, 186998), (133, 163096), (148, 146566), (152, 142709), (203, 106856), (232, 93499), (259, 83752), (266, 81548), (296, 73283), (361, 60088), (406, 53428), (518, 41876), (532, 40774), (551, 39368), (703, 30856), (722, 30044), (812, 26714), (1036, 20938), (1064, 20387), (1073, 20216), (1102, 19684), (1406, 15428), (1444, 15022), (1624, 13357), (2072, 10469), (2146, 10108), (2204, 9842), (2527, 8584), (2812, 7714), (2888, 7511), (3857, 5624), (4292, 5054), (4408, 4921)]