19979520

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{43}}^1$

素因数の和:89

約数の個数: 216

約数和(自身を含む): 71768928

約数和(自身を除く): 51789408

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 32, 33, 40, 43, 44, 48, 55, 60, 64, 66, 80, 86, 88, 96, 110, 120, 121, 128, 129, 132, 160, 165, 172, 176, 192, 215, 220, 240, 242, 256, 258, 264, 320, 330, 344, 352, 363, 384, 430, 440, 473, 480, 484, 516, 528, 605, 640, 645, 660, 688, 704, 726, 768, 860, 880, 946, 960, 968, 1032, 1056, 1210, 1280, 1290, 1320, 1376, 1408, 1419, 1452, 1720, 1760, 1815, 1892, 1920, 1936, 2064, 2112, 2365, 2420, 2580, 2640, 2752, 2816, 2838, 2904, 3440, 3520, 3630, 3784, 3840, 3872, 4128, 4224, 4730, 4840, 5160, 5203, 5280, 5504, 5676, 5808, 6880, 7040, 7095, 7260, 7568, 7744, 8256, 8448, 9460, 9680, 10320, 10406, 10560, 11008, 11352, 11616, 13760, 14080, 14190, 14520, 15136, 15488, 15609, 16512, 18920, 19360, 20640, 20812, 21120, 22704, 23232, 26015, 27520, 28380, 29040, 30272, 30976, 31218, 33024, 37840, 38720, 41280, 41624, 42240, 45408, 46464, 52030, 55040, 56760, 58080, 60544, 62436, 75680, 77440, 78045, 82560, 83248, 90816, 92928, 104060, 113520, 116160, 121088, 124872, 151360, 154880, 156090, 165120, 166496, 181632, 208120, 227040, 232320, 249744, 302720, 312180, 332992, 363264, 416240, 454080, 464640, 499488, 605440, 624360, 665984, 832480, 908160, 998976, 1248720, 1331968, 1664960, 1816320, 1997952, 2497440, 3329920, 3995904, 4994880, 6659840, 9989760, 19979520]

約数ペア:

[(1, 19979520), (2, 9989760), (3, 6659840), (4, 4994880), (5, 3995904), (6, 3329920), (8, 2497440), (10, 1997952), (11, 1816320), (12, 1664960), (15, 1331968), (16, 1248720), (20, 998976), (22, 908160), (24, 832480), (30, 665984), (32, 624360), (33, 605440), (40, 499488), (43, 464640), (44, 454080), (48, 416240), (55, 363264), (60, 332992), (64, 312180), (66, 302720), (80, 249744), (86, 232320), (88, 227040), (96, 208120), (110, 181632), (120, 166496), (121, 165120), (128, 156090), (129, 154880), (132, 151360), (160, 124872), (165, 121088), (172, 116160), (176, 113520), (192, 104060), (215, 92928), (220, 90816), (240, 83248), (242, 82560), (256, 78045), (258, 77440), (264, 75680), (320, 62436), (330, 60544), (344, 58080), (352, 56760), (363, 55040), (384, 52030), (430, 46464), (440, 45408), (473, 42240), (480, 41624), (484, 41280), (516, 38720), (528, 37840), (605, 33024), (640, 31218), (645, 30976), (660, 30272), (688, 29040), (704, 28380), (726, 27520), (768, 26015), (860, 23232), (880, 22704), (946, 21120), (960, 20812), (968, 20640), (1032, 19360), (1056, 18920), (1210, 16512), (1280, 15609), (1290, 15488), (1320, 15136), (1376, 14520), (1408, 14190), (1419, 14080), (1452, 13760), (1720, 11616), (1760, 11352), (1815, 11008), (1892, 10560), (1920, 10406), (1936, 10320), (2064, 9680), (2112, 9460), (2365, 8448), (2420, 8256), (2580, 7744), (2640, 7568), (2752, 7260), (2816, 7095), (2838, 7040), (2904, 6880), (3440, 5808), (3520, 5676), (3630, 5504), (3784, 5280), (3840, 5203), (3872, 5160), (4128, 4840), (4224, 4730)]