20706504

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{499}}^1$

素因数の和:547

約数の個数: 128

約数和(自身を含む): 67200000

約数和(自身を除く): 46493496

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 13, 14, 19, 21, 24, 26, 28, 38, 39, 42, 52, 56, 57, 76, 78, 84, 91, 104, 114, 133, 152, 156, 168, 182, 228, 247, 266, 273, 312, 364, 399, 456, 494, 499, 532, 546, 728, 741, 798, 988, 998, 1064, 1092, 1482, 1497, 1596, 1729, 1976, 1996, 2184, 2964, 2994, 3192, 3458, 3493, 3992, 5187, 5928, 5988, 6487, 6916, 6986, 9481, 10374, 10479, 11976, 12974, 13832, 13972, 18962, 19461, 20748, 20958, 25948, 27944, 28443, 37924, 38922, 41496, 41916, 45409, 51896, 56886, 66367, 75848, 77844, 83832, 90818, 113772, 123253, 132734, 136227, 155688, 181636, 199101, 227544, 246506, 265468, 272454, 363272, 369759, 398202, 493012, 530936, 544908, 739518, 796404, 862771, 986024, 1089816, 1479036, 1592808, 1725542, 2588313, 2958072, 3451084, 5176626, 6902168, 10353252, 20706504]

約数ペア:

[(1, 20706504), (2, 10353252), (3, 6902168), (4, 5176626), (6, 3451084), (7, 2958072), (8, 2588313), (12, 1725542), (13, 1592808), (14, 1479036), (19, 1089816), (21, 986024), (24, 862771), (26, 796404), (28, 739518), (38, 544908), (39, 530936), (42, 493012), (52, 398202), (56, 369759), (57, 363272), (76, 272454), (78, 265468), (84, 246506), (91, 227544), (104, 199101), (114, 181636), (133, 155688), (152, 136227), (156, 132734), (168, 123253), (182, 113772), (228, 90818), (247, 83832), (266, 77844), (273, 75848), (312, 66367), (364, 56886), (399, 51896), (456, 45409), (494, 41916), (499, 41496), (532, 38922), (546, 37924), (728, 28443), (741, 27944), (798, 25948), (988, 20958), (998, 20748), (1064, 19461), (1092, 18962), (1482, 13972), (1497, 13832), (1596, 12974), (1729, 11976), (1976, 10479), (1996, 10374), (2184, 9481), (2964, 6986), (2994, 6916), (3192, 6487), (3458, 5988), (3493, 5928), (3992, 5187)]