28880640

素因数分解:

$2^8\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1$

素因数の和:159

約数の個数: 216

約数和(自身を含む): 105225120

約数和(自身を除く): 76344480

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 23, 24, 30, 32, 36, 40, 45, 46, 48, 60, 64, 69, 72, 80, 90, 92, 96, 109, 115, 120, 128, 138, 144, 160, 180, 184, 192, 207, 218, 230, 240, 256, 276, 288, 320, 327, 345, 360, 368, 384, 414, 436, 460, 480, 545, 552, 576, 640, 654, 690, 720, 736, 768, 828, 872, 920, 960, 981, 1035, 1090, 1104, 1152, 1280, 1308, 1380, 1440, 1472, 1635, 1656, 1744, 1840, 1920, 1962, 2070, 2180, 2208, 2304, 2507, 2616, 2760, 2880, 2944, 3270, 3312, 3488, 3680, 3840, 3924, 4140, 4360, 4416, 4905, 5014, 5232, 5520, 5760, 5888, 6540, 6624, 6976, 7360, 7521, 7848, 8280, 8720, 8832, 9810, 10028, 10464, 11040, 11520, 12535, 13080, 13248, 13952, 14720, 15042, 15696, 16560, 17440, 17664, 19620, 20056, 20928, 22080, 22563, 25070, 26160, 26496, 27904, 29440, 30084, 31392, 33120, 34880, 37605, 39240, 40112, 41856, 44160, 45126, 50140, 52320, 52992, 60168, 62784, 66240, 69760, 75210, 78480, 80224, 83712, 88320, 90252, 100280, 104640, 112815, 120336, 125568, 132480, 139520, 150420, 156960, 160448, 180504, 200560, 209280, 225630, 240672, 251136, 264960, 300840, 313920, 320896, 361008, 401120, 418560, 451260, 481344, 601680, 627840, 641792, 722016, 802240, 902520, 962688, 1203360, 1255680, 1444032, 1604480, 1805040, 1925376, 2406720, 2888064, 3208960, 3610080, 4813440, 5776128, 7220160, 9626880, 14440320, 28880640]

約数ペア:

[(1, 28880640), (2, 14440320), (3, 9626880), (4, 7220160), (5, 5776128), (6, 4813440), (8, 3610080), (9, 3208960), (10, 2888064), (12, 2406720), (15, 1925376), (16, 1805040), (18, 1604480), (20, 1444032), (23, 1255680), (24, 1203360), (30, 962688), (32, 902520), (36, 802240), (40, 722016), (45, 641792), (46, 627840), (48, 601680), (60, 481344), (64, 451260), (69, 418560), (72, 401120), (80, 361008), (90, 320896), (92, 313920), (96, 300840), (109, 264960), (115, 251136), (120, 240672), (128, 225630), (138, 209280), (144, 200560), (160, 180504), (180, 160448), (184, 156960), (192, 150420), (207, 139520), (218, 132480), (230, 125568), (240, 120336), (256, 112815), (276, 104640), (288, 100280), (320, 90252), (327, 88320), (345, 83712), (360, 80224), (368, 78480), (384, 75210), (414, 69760), (436, 66240), (460, 62784), (480, 60168), (545, 52992), (552, 52320), (576, 50140), (640, 45126), (654, 44160), (690, 41856), (720, 40112), (736, 39240), (768, 37605), (828, 34880), (872, 33120), (920, 31392), (960, 30084), (981, 29440), (1035, 27904), (1090, 26496), (1104, 26160), (1152, 25070), (1280, 22563), (1308, 22080), (1380, 20928), (1440, 20056), (1472, 19620), (1635, 17664), (1656, 17440), (1744, 16560), (1840, 15696), (1920, 15042), (1962, 14720), (2070, 13952), (2180, 13248), (2208, 13080), (2304, 12535), (2507, 11520), (2616, 11040), (2760, 10464), (2880, 10028), (2944, 9810), (3270, 8832), (3312, 8720), (3488, 8280), (3680, 7848), (3840, 7521), (3924, 7360), (4140, 6976), (4360, 6624), (4416, 6540), (4905, 5888), (5014, 5760), (5232, 5520)]