28720560

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1$

素因数の和:104

約数の個数: 240

約数和(自身を含む): 104493312

約数和(自身を除く): 75772752

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 23, 24, 30, 33, 40, 43, 44, 46, 48, 55, 60, 66, 69, 80, 86, 88, 92, 110, 115, 120, 121, 129, 132, 138, 165, 172, 176, 184, 215, 220, 230, 240, 242, 253, 258, 264, 276, 330, 344, 345, 363, 368, 430, 440, 460, 473, 484, 506, 516, 528, 552, 605, 645, 660, 688, 690, 726, 759, 860, 880, 920, 946, 968, 989, 1012, 1032, 1104, 1210, 1265, 1290, 1320, 1380, 1419, 1452, 1518, 1720, 1815, 1840, 1892, 1936, 1978, 2024, 2064, 2365, 2420, 2530, 2580, 2640, 2760, 2783, 2838, 2904, 2967, 3036, 3440, 3630, 3784, 3795, 3956, 4048, 4730, 4840, 4945, 5060, 5160, 5203, 5520, 5566, 5676, 5808, 5934, 6072, 7095, 7260, 7568, 7590, 7912, 8349, 9460, 9680, 9890, 10120, 10320, 10406, 10879, 11132, 11352, 11868, 12144, 13915, 14190, 14520, 14835, 15180, 15609, 15824, 16698, 18920, 19780, 20240, 20812, 21758, 22264, 22704, 23736, 26015, 27830, 28380, 29040, 29670, 30360, 31218, 32637, 33396, 37840, 39560, 41624, 41745, 43516, 44528, 47472, 52030, 54395, 55660, 56760, 59340, 60720, 62436, 65274, 66792, 78045, 79120, 83248, 83490, 87032, 104060, 108790, 111320, 113520, 118680, 119669, 124872, 130548, 133584, 156090, 163185, 166980, 174064, 208120, 217580, 222640, 237360, 239338, 249744, 261096, 312180, 326370, 333960, 359007, 416240, 435160, 478676, 522192, 598345, 624360, 652740, 667920, 718014, 870320, 957352, 1196690, 1248720, 1305480, 1436028, 1795035, 1914704, 2393380, 2610960, 2872056, 3590070, 4786760, 5744112, 7180140, 9573520, 14360280, 28720560]

約数ペア:

[(1, 28720560), (2, 14360280), (3, 9573520), (4, 7180140), (5, 5744112), (6, 4786760), (8, 3590070), (10, 2872056), (11, 2610960), (12, 2393380), (15, 1914704), (16, 1795035), (20, 1436028), (22, 1305480), (23, 1248720), (24, 1196690), (30, 957352), (33, 870320), (40, 718014), (43, 667920), (44, 652740), (46, 624360), (48, 598345), (55, 522192), (60, 478676), (66, 435160), (69, 416240), (80, 359007), (86, 333960), (88, 326370), (92, 312180), (110, 261096), (115, 249744), (120, 239338), (121, 237360), (129, 222640), (132, 217580), (138, 208120), (165, 174064), (172, 166980), (176, 163185), (184, 156090), (215, 133584), (220, 130548), (230, 124872), (240, 119669), (242, 118680), (253, 113520), (258, 111320), (264, 108790), (276, 104060), (330, 87032), (344, 83490), (345, 83248), (363, 79120), (368, 78045), (430, 66792), (440, 65274), (460, 62436), (473, 60720), (484, 59340), (506, 56760), (516, 55660), (528, 54395), (552, 52030), (605, 47472), (645, 44528), (660, 43516), (688, 41745), (690, 41624), (726, 39560), (759, 37840), (860, 33396), (880, 32637), (920, 31218), (946, 30360), (968, 29670), (989, 29040), (1012, 28380), (1032, 27830), (1104, 26015), (1210, 23736), (1265, 22704), (1290, 22264), (1320, 21758), (1380, 20812), (1419, 20240), (1452, 19780), (1518, 18920), (1720, 16698), (1815, 15824), (1840, 15609), (1892, 15180), (1936, 14835), (1978, 14520), (2024, 14190), (2064, 13915), (2365, 12144), (2420, 11868), (2530, 11352), (2580, 11132), (2640, 10879), (2760, 10406), (2783, 10320), (2838, 10120), (2904, 9890), (2967, 9680), (3036, 9460), (3440, 8349), (3630, 7912), (3784, 7590), (3795, 7568), (3956, 7260), (4048, 7095), (4730, 6072), (4840, 5934), (4945, 5808), (5060, 5676), (5160, 5566), (5203, 5520)]