20004480

素因数分解:

$2^7\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{151}}^1$

素因数の和:199

約数の個数: 192

約数和(自身を含む): 72558720

約数和(自身を除く): 52554240

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, 115, 120, 128, 138, 144, 151, 160, 180, 184, 192, 207, 230, 240, 276, 288, 302, 320, 345, 360, 368, 384, 414, 453, 460, 480, 552, 576, 604, 640, 690, 720, 736, 755, 828, 906, 920, 960, 1035, 1104, 1152, 1208, 1359, 1380, 1440, 1472, 1510, 1656, 1812, 1840, 1920, 2070, 2208, 2265, 2416, 2718, 2760, 2880, 2944, 3020, 3312, 3473, 3624, 3680, 4140, 4416, 4530, 4832, 5436, 5520, 5760, 6040, 6624, 6795, 6946, 7248, 7360, 8280, 8832, 9060, 9664, 10419, 10872, 11040, 12080, 13248, 13590, 13892, 14496, 14720, 16560, 17365, 18120, 19328, 20838, 21744, 22080, 24160, 26496, 27180, 27784, 28992, 31257, 33120, 34730, 36240, 41676, 43488, 44160, 48320, 52095, 54360, 55568, 57984, 62514, 66240, 69460, 72480, 83352, 86976, 96640, 104190, 108720, 111136, 125028, 132480, 138920, 144960, 156285, 166704, 173952, 208380, 217440, 222272, 250056, 277840, 289920, 312570, 333408, 416760, 434880, 444544, 500112, 555680, 625140, 666816, 833520, 869760, 1000224, 1111360, 1250280, 1333632, 1667040, 2000448, 2222720, 2500560, 3334080, 4000896, 5001120, 6668160, 10002240, 20004480]

約数ペア:

[(1, 20004480), (2, 10002240), (3, 6668160), (4, 5001120), (5, 4000896), (6, 3334080), (8, 2500560), (9, 2222720), (10, 2000448), (12, 1667040), (15, 1333632), (16, 1250280), (18, 1111360), (20, 1000224), (23, 869760), (24, 833520), (30, 666816), (32, 625140), (36, 555680), (40, 500112), (45, 444544), (46, 434880), (48, 416760), (60, 333408), (64, 312570), (69, 289920), (72, 277840), (80, 250056), (90, 222272), (92, 217440), (96, 208380), (115, 173952), (120, 166704), (128, 156285), (138, 144960), (144, 138920), (151, 132480), (160, 125028), (180, 111136), (184, 108720), (192, 104190), (207, 96640), (230, 86976), (240, 83352), (276, 72480), (288, 69460), (302, 66240), (320, 62514), (345, 57984), (360, 55568), (368, 54360), (384, 52095), (414, 48320), (453, 44160), (460, 43488), (480, 41676), (552, 36240), (576, 34730), (604, 33120), (640, 31257), (690, 28992), (720, 27784), (736, 27180), (755, 26496), (828, 24160), (906, 22080), (920, 21744), (960, 20838), (1035, 19328), (1104, 18120), (1152, 17365), (1208, 16560), (1359, 14720), (1380, 14496), (1440, 13892), (1472, 13590), (1510, 13248), (1656, 12080), (1812, 11040), (1840, 10872), (1920, 10419), (2070, 9664), (2208, 9060), (2265, 8832), (2416, 8280), (2718, 7360), (2760, 7248), (2880, 6946), (2944, 6795), (3020, 6624), (3312, 6040), (3473, 5760), (3624, 5520), (3680, 5436), (4140, 4832), (4416, 4530)]