28706720

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{71}}^1$

素因数の和:131

約数の個数: 144

約数和(自身を含む): 82954368

約数和(自身を除く): 54247648

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 32, 35, 38, 40, 56, 70, 71, 76, 80, 95, 112, 133, 140, 142, 152, 160, 190, 224, 266, 280, 284, 304, 355, 361, 380, 497, 532, 560, 568, 608, 665, 710, 722, 760, 994, 1064, 1120, 1136, 1330, 1349, 1420, 1444, 1520, 1805, 1988, 2128, 2272, 2485, 2527, 2660, 2698, 2840, 2888, 3040, 3610, 3976, 4256, 4970, 5054, 5320, 5396, 5680, 5776, 6745, 7220, 7952, 9443, 9940, 10108, 10640, 10792, 11360, 11552, 12635, 13490, 14440, 15904, 18886, 19880, 20216, 21280, 21584, 25270, 25631, 26980, 28880, 37772, 39760, 40432, 43168, 47215, 50540, 51262, 53960, 57760, 75544, 79520, 80864, 94430, 101080, 102524, 107920, 128155, 151088, 179417, 188860, 202160, 205048, 215840, 256310, 302176, 358834, 377720, 404320, 410096, 512620, 717668, 755440, 820192, 897085, 1025240, 1435336, 1510880, 1794170, 2050480, 2870672, 3588340, 4100960, 5741344, 7176680, 14353360, 28706720]

約数ペア:

[(1, 28706720), (2, 14353360), (4, 7176680), (5, 5741344), (7, 4100960), (8, 3588340), (10, 2870672), (14, 2050480), (16, 1794170), (19, 1510880), (20, 1435336), (28, 1025240), (32, 897085), (35, 820192), (38, 755440), (40, 717668), (56, 512620), (70, 410096), (71, 404320), (76, 377720), (80, 358834), (95, 302176), (112, 256310), (133, 215840), (140, 205048), (142, 202160), (152, 188860), (160, 179417), (190, 151088), (224, 128155), (266, 107920), (280, 102524), (284, 101080), (304, 94430), (355, 80864), (361, 79520), (380, 75544), (497, 57760), (532, 53960), (560, 51262), (568, 50540), (608, 47215), (665, 43168), (710, 40432), (722, 39760), (760, 37772), (994, 28880), (1064, 26980), (1120, 25631), (1136, 25270), (1330, 21584), (1349, 21280), (1420, 20216), (1444, 19880), (1520, 18886), (1805, 15904), (1988, 14440), (2128, 13490), (2272, 12635), (2485, 11552), (2527, 11360), (2660, 10792), (2698, 10640), (2840, 10108), (2888, 9940), (3040, 9443), (3610, 7952), (3976, 7220), (4256, 6745), (4970, 5776), (5054, 5680), (5320, 5396)]