21660480

素因数分解:

$2^6\times 3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1$

素因数の和:158

約数の個数: 224

約数和(自身を含む): 80467200

約数和(自身を除く): 58806720

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 23, 24, 27, 30, 32, 36, 40, 45, 46, 48, 54, 60, 64, 69, 72, 80, 90, 92, 96, 108, 109, 115, 120, 135, 138, 144, 160, 180, 184, 192, 207, 216, 218, 230, 240, 270, 276, 288, 320, 327, 345, 360, 368, 414, 432, 436, 460, 480, 540, 545, 552, 576, 621, 654, 690, 720, 736, 828, 864, 872, 920, 960, 981, 1035, 1080, 1090, 1104, 1242, 1308, 1380, 1440, 1472, 1635, 1656, 1728, 1744, 1840, 1962, 2070, 2160, 2180, 2208, 2484, 2507, 2616, 2760, 2880, 2943, 3105, 3270, 3312, 3488, 3680, 3924, 4140, 4320, 4360, 4416, 4905, 4968, 5014, 5232, 5520, 5886, 6210, 6540, 6624, 6976, 7360, 7521, 7848, 8280, 8640, 8720, 9810, 9936, 10028, 10464, 11040, 11772, 12420, 12535, 13080, 13248, 14715, 15042, 15696, 16560, 17440, 19620, 19872, 20056, 20928, 22080, 22563, 23544, 24840, 25070, 26160, 29430, 30084, 31392, 33120, 34880, 37605, 39240, 39744, 40112, 45126, 47088, 49680, 50140, 52320, 58860, 60168, 62784, 66240, 67689, 75210, 78480, 80224, 90252, 94176, 99360, 100280, 104640, 112815, 117720, 120336, 135378, 150420, 156960, 160448, 180504, 188352, 198720, 200560, 225630, 235440, 240672, 270756, 300840, 313920, 338445, 361008, 401120, 451260, 470880, 481344, 541512, 601680, 676890, 722016, 802240, 902520, 941760, 1083024, 1203360, 1353780, 1444032, 1805040, 2166048, 2406720, 2707560, 3610080, 4332096, 5415120, 7220160, 10830240, 21660480]

約数ペア:

[(1, 21660480), (2, 10830240), (3, 7220160), (4, 5415120), (5, 4332096), (6, 3610080), (8, 2707560), (9, 2406720), (10, 2166048), (12, 1805040), (15, 1444032), (16, 1353780), (18, 1203360), (20, 1083024), (23, 941760), (24, 902520), (27, 802240), (30, 722016), (32, 676890), (36, 601680), (40, 541512), (45, 481344), (46, 470880), (48, 451260), (54, 401120), (60, 361008), (64, 338445), (69, 313920), (72, 300840), (80, 270756), (90, 240672), (92, 235440), (96, 225630), (108, 200560), (109, 198720), (115, 188352), (120, 180504), (135, 160448), (138, 156960), (144, 150420), (160, 135378), (180, 120336), (184, 117720), (192, 112815), (207, 104640), (216, 100280), (218, 99360), (230, 94176), (240, 90252), (270, 80224), (276, 78480), (288, 75210), (320, 67689), (327, 66240), (345, 62784), (360, 60168), (368, 58860), (414, 52320), (432, 50140), (436, 49680), (460, 47088), (480, 45126), (540, 40112), (545, 39744), (552, 39240), (576, 37605), (621, 34880), (654, 33120), (690, 31392), (720, 30084), (736, 29430), (828, 26160), (864, 25070), (872, 24840), (920, 23544), (960, 22563), (981, 22080), (1035, 20928), (1080, 20056), (1090, 19872), (1104, 19620), (1242, 17440), (1308, 16560), (1380, 15696), (1440, 15042), (1472, 14715), (1635, 13248), (1656, 13080), (1728, 12535), (1744, 12420), (1840, 11772), (1962, 11040), (2070, 10464), (2160, 10028), (2180, 9936), (2208, 9810), (2484, 8720), (2507, 8640), (2616, 8280), (2760, 7848), (2880, 7521), (2943, 7360), (3105, 6976), (3270, 6624), (3312, 6540), (3488, 6210), (3680, 5886), (3924, 5520), (4140, 5232), (4320, 5014), (4360, 4968), (4416, 4905)]