21720160

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1$

素因数の和:117

約数の個数: 192

約数和(自身を含む): 67060224

約数和(自身を除く): 45340064

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 32, 35, 40, 41, 43, 44, 55, 56, 70, 77, 80, 82, 86, 88, 110, 112, 140, 154, 160, 164, 172, 176, 205, 215, 220, 224, 280, 287, 301, 308, 328, 344, 352, 385, 410, 430, 440, 451, 473, 560, 574, 602, 616, 656, 688, 770, 820, 860, 880, 902, 946, 1120, 1148, 1204, 1232, 1312, 1376, 1435, 1505, 1540, 1640, 1720, 1760, 1763, 1804, 1892, 2255, 2296, 2365, 2408, 2464, 2870, 3010, 3080, 3157, 3280, 3311, 3440, 3526, 3608, 3784, 4510, 4592, 4730, 4816, 5740, 6020, 6160, 6314, 6560, 6622, 6880, 7052, 7216, 7568, 8815, 9020, 9184, 9460, 9632, 11480, 12040, 12320, 12341, 12628, 13244, 14104, 14432, 15136, 15785, 16555, 17630, 18040, 18920, 19393, 22960, 24080, 24682, 25256, 26488, 28208, 31570, 33110, 35260, 36080, 37840, 38786, 45920, 48160, 49364, 50512, 52976, 56416, 61705, 63140, 66220, 70520, 72160, 75680, 77572, 96965, 98728, 101024, 105952, 123410, 126280, 132440, 135751, 141040, 155144, 193930, 197456, 246820, 252560, 264880, 271502, 282080, 310288, 387860, 394912, 493640, 505120, 529760, 543004, 620576, 678755, 775720, 987280, 1086008, 1357510, 1551440, 1974560, 2172016, 2715020, 3102880, 4344032, 5430040, 10860080, 21720160]

約数ペア:

[(1, 21720160), (2, 10860080), (4, 5430040), (5, 4344032), (7, 3102880), (8, 2715020), (10, 2172016), (11, 1974560), (14, 1551440), (16, 1357510), (20, 1086008), (22, 987280), (28, 775720), (32, 678755), (35, 620576), (40, 543004), (41, 529760), (43, 505120), (44, 493640), (55, 394912), (56, 387860), (70, 310288), (77, 282080), (80, 271502), (82, 264880), (86, 252560), (88, 246820), (110, 197456), (112, 193930), (140, 155144), (154, 141040), (160, 135751), (164, 132440), (172, 126280), (176, 123410), (205, 105952), (215, 101024), (220, 98728), (224, 96965), (280, 77572), (287, 75680), (301, 72160), (308, 70520), (328, 66220), (344, 63140), (352, 61705), (385, 56416), (410, 52976), (430, 50512), (440, 49364), (451, 48160), (473, 45920), (560, 38786), (574, 37840), (602, 36080), (616, 35260), (656, 33110), (688, 31570), (770, 28208), (820, 26488), (860, 25256), (880, 24682), (902, 24080), (946, 22960), (1120, 19393), (1148, 18920), (1204, 18040), (1232, 17630), (1312, 16555), (1376, 15785), (1435, 15136), (1505, 14432), (1540, 14104), (1640, 13244), (1720, 12628), (1760, 12341), (1763, 12320), (1804, 12040), (1892, 11480), (2255, 9632), (2296, 9460), (2365, 9184), (2408, 9020), (2464, 8815), (2870, 7568), (3010, 7216), (3080, 7052), (3157, 6880), (3280, 6622), (3311, 6560), (3440, 6314), (3526, 6160), (3608, 6020), (3784, 5740), (4510, 4816), (4592, 4730)]