20718936

素因数分解:

$2^3\times 3^3\times 7^1\times {\mathrm{71}}^1\times {\mathrm{193}}^1$

素因数の和:286

約数の個数: 128

約数和(自身を含む): 67046400

約数和(自身を除く): 46327464

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 27, 28, 36, 42, 54, 56, 63, 71, 72, 84, 108, 126, 142, 168, 189, 193, 213, 216, 252, 284, 378, 386, 426, 497, 504, 568, 579, 639, 756, 772, 852, 994, 1158, 1278, 1351, 1491, 1512, 1544, 1704, 1737, 1917, 1988, 2316, 2556, 2702, 2982, 3474, 3834, 3976, 4053, 4473, 4632, 5112, 5211, 5404, 5964, 6948, 7668, 8106, 8946, 10422, 10808, 11928, 12159, 13419, 13703, 13896, 15336, 16212, 17892, 20844, 24318, 26838, 27406, 32424, 35784, 36477, 41109, 41688, 48636, 53676, 54812, 72954, 82218, 95921, 97272, 107352, 109624, 123327, 145908, 164436, 191842, 246654, 287763, 291816, 328872, 369981, 383684, 493308, 575526, 739962, 767368, 863289, 986616, 1151052, 1479924, 1726578, 2302104, 2589867, 2959848, 3453156, 5179734, 6906312, 10359468, 20718936]

約数ペア:

[(1, 20718936), (2, 10359468), (3, 6906312), (4, 5179734), (6, 3453156), (7, 2959848), (8, 2589867), (9, 2302104), (12, 1726578), (14, 1479924), (18, 1151052), (21, 986616), (24, 863289), (27, 767368), (28, 739962), (36, 575526), (42, 493308), (54, 383684), (56, 369981), (63, 328872), (71, 291816), (72, 287763), (84, 246654), (108, 191842), (126, 164436), (142, 145908), (168, 123327), (189, 109624), (193, 107352), (213, 97272), (216, 95921), (252, 82218), (284, 72954), (378, 54812), (386, 53676), (426, 48636), (497, 41688), (504, 41109), (568, 36477), (579, 35784), (639, 32424), (756, 27406), (772, 26838), (852, 24318), (994, 20844), (1158, 17892), (1278, 16212), (1351, 15336), (1491, 13896), (1512, 13703), (1544, 13419), (1704, 12159), (1737, 11928), (1917, 10808), (1988, 10422), (2316, 8946), (2556, 8106), (2702, 7668), (2982, 6948), (3474, 5964), (3834, 5404), (3976, 5211), (4053, 5112), (4473, 4632)]