28475680

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{29}}^1$

素因数の和:99

約数の個数: 144

約数和(自身を含む): 77769720

約数和(自身を除く): 49294040

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 19, 20, 29, 32, 34, 38, 40, 58, 68, 76, 80, 85, 95, 116, 136, 145, 152, 160, 170, 190, 232, 272, 290, 304, 323, 340, 361, 380, 464, 493, 544, 551, 580, 608, 646, 680, 722, 760, 928, 986, 1102, 1160, 1292, 1360, 1444, 1520, 1615, 1805, 1972, 2204, 2320, 2465, 2584, 2720, 2755, 2888, 3040, 3230, 3610, 3944, 4408, 4640, 4930, 5168, 5510, 5776, 6137, 6460, 7220, 7888, 8816, 9367, 9860, 10336, 10469, 11020, 11552, 12274, 12920, 14440, 15776, 17632, 18734, 19720, 20938, 22040, 24548, 25840, 28880, 30685, 37468, 39440, 41876, 44080, 46835, 49096, 51680, 52345, 57760, 61370, 74936, 78880, 83752, 88160, 93670, 98192, 104690, 122740, 149872, 167504, 177973, 187340, 196384, 209380, 245480, 299744, 335008, 355946, 374680, 418760, 490960, 711892, 749360, 837520, 889865, 981920, 1423784, 1498720, 1675040, 1779730, 2847568, 3559460, 5695136, 7118920, 14237840, 28475680]

約数ペア:

[(1, 28475680), (2, 14237840), (4, 7118920), (5, 5695136), (8, 3559460), (10, 2847568), (16, 1779730), (17, 1675040), (19, 1498720), (20, 1423784), (29, 981920), (32, 889865), (34, 837520), (38, 749360), (40, 711892), (58, 490960), (68, 418760), (76, 374680), (80, 355946), (85, 335008), (95, 299744), (116, 245480), (136, 209380), (145, 196384), (152, 187340), (160, 177973), (170, 167504), (190, 149872), (232, 122740), (272, 104690), (290, 98192), (304, 93670), (323, 88160), (340, 83752), (361, 78880), (380, 74936), (464, 61370), (493, 57760), (544, 52345), (551, 51680), (580, 49096), (608, 46835), (646, 44080), (680, 41876), (722, 39440), (760, 37468), (928, 30685), (986, 28880), (1102, 25840), (1160, 24548), (1292, 22040), (1360, 20938), (1444, 19720), (1520, 18734), (1615, 17632), (1805, 15776), (1972, 14440), (2204, 12920), (2320, 12274), (2465, 11552), (2584, 11020), (2720, 10469), (2755, 10336), (2888, 9860), (3040, 9367), (3230, 8816), (3610, 7888), (3944, 7220), (4408, 6460), (4640, 6137), (4930, 5776), (5168, 5510)]