20640967.000000000

素因数分解:

$2^7\times 3^1\times 5^2\times {\mathrm{11}}^2\times {\mathrm{89}}^1$

素因数の和:138

約数の個数: 288

約数和(自身を含む): 378491400

約数和(自身を除く): 275109000

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 25, 30, 32, 33, 40, 44, 48, 50, 55, 60, 64, 66, 75, 80, 88, 89, 96, 100, 110, 120, 121, 128, 132, 150, 160, 165, 176, 178, 192, 200, 220, 240, 242, 264, 267, 275, 300, 320, 330, 352, 356, 363, 384, 400, 440, 445, 480, 484, 528, 534, 550, 600, 605, 640, 660, 704, 712, 726, 800, 825, 880, 890, 960, 968, 979, 1056, 1068, 1100, 1200, 1210, 1320, 1335, 1408, 1424, 1452, 1600, 1650, 1760, 1780, 1815, 1920, 1936, 1958, 2112, 2136, 2200, 2225, 2400, 2420, 2640, 2670, 2848, 2904, 2937, 3025, 3200, 3300, 3520, 3560, 3630, 3872, 3916, 4224, 4272, 4400, 4450, 4800, 4840, 4895, 5280, 5340, 5696, 5808, 5874, 6050, 6600, 6675, 7040, 7120, 7260, 7744, 7832, 8544, 8800, 8900, 9075, 9600, 9680, 9790, 10560, 10680, 10769, 11392, 11616, 11748, 12100, 13200, 13350, 14240, 14520, 14685, 15488, 15664, 17088, 17600, 17800, 18150, 19360, 19580, 21120, 21360, 21538, 23232, 23496, 24200, 24475, 26400, 26700, 28480, 29040, 29370, 31328, 32307, 34176, 35200, 35600, 36300, 38720, 39160, 42720, 43076, 46464, 46992, 48400, 48950, 52800, 53400, 53845, 56960, 58080, 58740, 62656, 64614, 71200, 72600, 73425, 77440, 78320, 85440, 86152, 93984, 96800, 97900, 105600, 106800, 107690, 116160, 117480, 125312, 129228, 142400, 145200, 146850, 156640, 161535, 170880, 172304, 187968, 193600, 195800, 213600, 215380, 232320, 234960, 258456, 269225, 284800, 290400, 293700, 313280, 323070, 344608, 375936, 387200, 391600, 427200, 430760, 469920, 516912, 538450, 580800, 587400, 626560, 646140, 689216, 783200, 807675, 854400, 861520, 939840, 1033824, 1076900, 1161600, 1174800, 1292280, 1378432, 1566400, 1615350, 1723040, 1879680, 2067648, 2153800, 2349600, 2584560, 3132800, 3230700, 3446080, 4135296, 4307600, 4699200, 5169120, 6461400, 6892160, 8615200, 9398400, 10338240, 12922800, 17230400, 20676480, 25845600, 34460800, 51691200, 103382400]

約数ペア:

[(1, 103382400), (2, 51691200), (3, 34460800), (4, 25845600), (5, 20676480), (6, 17230400), (8, 12922800), (10, 10338240), (11, 9398400), (12, 8615200), (15, 6892160), (16, 6461400), (20, 5169120), (22, 4699200), (24, 4307600), (25, 4135296), (30, 3446080), (32, 3230700), (33, 3132800), (40, 2584560), (44, 2349600), (48, 2153800), (50, 2067648), (55, 1879680), (60, 1723040), (64, 1615350), (66, 1566400), (75, 1378432), (80, 1292280), (88, 1174800), (89, 1161600), (96, 1076900), (100, 1033824), (110, 939840), (120, 861520), (121, 854400), (128, 807675), (132, 783200), (150, 689216), (160, 646140), (165, 626560), (176, 587400), (178, 580800), (192, 538450), (200, 516912), (220, 469920), (240, 430760), (242, 427200), (264, 391600), (267, 387200), (275, 375936), (300, 344608), (320, 323070), (330, 313280), (352, 293700), (356, 290400), (363, 284800), (384, 269225), (400, 258456), (440, 234960), (445, 232320), (480, 215380), (484, 213600), (528, 195800), (534, 193600), (550, 187968), (600, 172304), (605, 170880), (640, 161535), (660, 156640), (704, 146850), (712, 145200), (726, 142400), (800, 129228), (825, 125312), (880, 117480), (890, 116160), (960, 107690), (968, 106800), (979, 105600), (1056, 97900), (1068, 96800), (1100, 93984), (1200, 86152), (1210, 85440), (1320, 78320), (1335, 77440), (1408, 73425), (1424, 72600), (1452, 71200), (1600, 64614), (1650, 62656), (1760, 58740), (1780, 58080), (1815, 56960), (1920, 53845), (1936, 53400), (1958, 52800), (2112, 48950), (2136, 48400), (2200, 46992), (2225, 46464), (2400, 43076), (2420, 42720), (2640, 39160), (2670, 38720), (2848, 36300), (2904, 35600), (2937, 35200), (3025, 34176), (3200, 32307), (3300, 31328), (3520, 29370), (3560, 29040), (3630, 28480), (3872, 26700), (3916, 26400), (4224, 24475), (4272, 24200), (4400, 23496), (4450, 23232), (4800, 21538), (4840, 21360), (4895, 21120), (5280, 19580), (5340, 19360), (5696, 18150), (5808, 17800), (5874, 17600), (6050, 17088), (6600, 15664), (6675, 15488), (7040, 14685), (7120, 14520), (7260, 14240), (7744, 13350), (7832, 13200), (8544, 12100), (8800, 11748), (8900, 11616), (9075, 11392), (9600, 10769), (9680, 10680), (9790, 10560)]