28352720

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{101}}^1$

素因数の和:165

約数の個数: 120

約数和(自身を含む): 75698280

約数和(自身を除く): 47345560

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 29, 40, 44, 55, 58, 80, 88, 101, 110, 116, 121, 145, 176, 202, 220, 232, 242, 290, 319, 404, 440, 464, 484, 505, 580, 605, 638, 808, 880, 968, 1010, 1111, 1160, 1210, 1276, 1595, 1616, 1936, 2020, 2222, 2320, 2420, 2552, 2929, 3190, 3509, 4040, 4444, 4840, 5104, 5555, 5858, 6380, 7018, 8080, 8888, 9680, 11110, 11716, 12221, 12760, 14036, 14645, 17545, 17776, 22220, 23432, 24442, 25520, 28072, 29290, 32219, 35090, 44440, 46864, 48884, 56144, 58580, 61105, 64438, 70180, 88880, 97768, 117160, 122210, 128876, 140360, 161095, 195536, 234320, 244420, 257752, 280720, 322190, 354409, 488840, 515504, 644380, 708818, 977680, 1288760, 1417636, 1772045, 2577520, 2835272, 3544090, 5670544, 7088180, 14176360, 28352720]

約数ペア:

[(1, 28352720), (2, 14176360), (4, 7088180), (5, 5670544), (8, 3544090), (10, 2835272), (11, 2577520), (16, 1772045), (20, 1417636), (22, 1288760), (29, 977680), (40, 708818), (44, 644380), (55, 515504), (58, 488840), (80, 354409), (88, 322190), (101, 280720), (110, 257752), (116, 244420), (121, 234320), (145, 195536), (176, 161095), (202, 140360), (220, 128876), (232, 122210), (242, 117160), (290, 97768), (319, 88880), (404, 70180), (440, 64438), (464, 61105), (484, 58580), (505, 56144), (580, 48884), (605, 46864), (638, 44440), (808, 35090), (880, 32219), (968, 29290), (1010, 28072), (1111, 25520), (1160, 24442), (1210, 23432), (1276, 22220), (1595, 17776), (1616, 17545), (1936, 14645), (2020, 14036), (2222, 12760), (2320, 12221), (2420, 11716), (2552, 11110), (2929, 9680), (3190, 8888), (3509, 8080), (4040, 7018), (4444, 6380), (4840, 5858), (5104, 5555)]