19996704

素因数分解:

$2^5\times 3^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{109}}^1$

素因数の和:152

約数の個数: 216

約数和(自身を含む): 71891820

約数和(自身を除く): 51895116

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 13, 14, 16, 18, 21, 24, 26, 28, 32, 36, 39, 42, 48, 49, 52, 56, 63, 72, 78, 84, 91, 96, 98, 104, 109, 112, 117, 126, 144, 147, 156, 168, 182, 196, 208, 218, 224, 234, 252, 273, 288, 294, 312, 327, 336, 364, 392, 416, 436, 441, 468, 504, 546, 588, 624, 637, 654, 672, 728, 763, 784, 819, 872, 882, 936, 981, 1008, 1092, 1176, 1248, 1274, 1308, 1417, 1456, 1526, 1568, 1638, 1744, 1764, 1872, 1911, 1962, 2016, 2184, 2289, 2352, 2548, 2616, 2834, 2912, 3052, 3276, 3488, 3528, 3744, 3822, 3924, 4251, 4368, 4578, 4704, 5096, 5232, 5341, 5668, 5733, 6104, 6552, 6867, 7056, 7644, 7848, 8502, 8736, 9156, 9919, 10192, 10464, 10682, 11336, 11466, 12208, 12753, 13104, 13734, 14112, 15288, 15696, 16023, 17004, 18312, 19838, 20384, 21364, 22672, 22932, 24416, 25506, 26208, 27468, 29757, 30576, 31392, 32046, 34008, 36624, 39676, 42728, 45344, 45864, 48069, 51012, 54936, 59514, 61152, 64092, 68016, 69433, 73248, 79352, 85456, 89271, 91728, 96138, 102024, 109872, 119028, 128184, 136032, 138866, 158704, 170912, 178542, 183456, 192276, 204048, 208299, 219744, 238056, 256368, 277732, 317408, 357084, 384552, 408096, 416598, 476112, 512736, 555464, 624897, 714168, 769104, 833196, 952224, 1110928, 1249794, 1428336, 1538208, 1666392, 2221856, 2499588, 2856672, 3332784, 4999176, 6665568, 9998352, 19996704]

約数ペア:

[(1, 19996704), (2, 9998352), (3, 6665568), (4, 4999176), (6, 3332784), (7, 2856672), (8, 2499588), (9, 2221856), (12, 1666392), (13, 1538208), (14, 1428336), (16, 1249794), (18, 1110928), (21, 952224), (24, 833196), (26, 769104), (28, 714168), (32, 624897), (36, 555464), (39, 512736), (42, 476112), (48, 416598), (49, 408096), (52, 384552), (56, 357084), (63, 317408), (72, 277732), (78, 256368), (84, 238056), (91, 219744), (96, 208299), (98, 204048), (104, 192276), (109, 183456), (112, 178542), (117, 170912), (126, 158704), (144, 138866), (147, 136032), (156, 128184), (168, 119028), (182, 109872), (196, 102024), (208, 96138), (218, 91728), (224, 89271), (234, 85456), (252, 79352), (273, 73248), (288, 69433), (294, 68016), (312, 64092), (327, 61152), (336, 59514), (364, 54936), (392, 51012), (416, 48069), (436, 45864), (441, 45344), (468, 42728), (504, 39676), (546, 36624), (588, 34008), (624, 32046), (637, 31392), (654, 30576), (672, 29757), (728, 27468), (763, 26208), (784, 25506), (819, 24416), (872, 22932), (882, 22672), (936, 21364), (981, 20384), (1008, 19838), (1092, 18312), (1176, 17004), (1248, 16023), (1274, 15696), (1308, 15288), (1417, 14112), (1456, 13734), (1526, 13104), (1568, 12753), (1638, 12208), (1744, 11466), (1764, 11336), (1872, 10682), (1911, 10464), (1962, 10192), (2016, 9919), (2184, 9156), (2289, 8736), (2352, 8502), (2548, 7848), (2616, 7644), (2834, 7056), (2912, 6867), (3052, 6552), (3276, 6104), (3488, 5733), (3528, 5668), (3744, 5341), (3822, 5232), (3924, 5096), (4251, 4704), (4368, 4578)]