21148308

素因数分解:

$2^2\times 3^2\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{431}}^1$

素因数の和:517

約数の個数: 72

約数和(自身を含む): 56609280

約数和(自身を除く): 35460972

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 29, 36, 47, 58, 87, 94, 116, 141, 174, 188, 261, 282, 348, 423, 431, 522, 564, 846, 862, 1044, 1293, 1363, 1692, 1724, 2586, 2726, 3879, 4089, 5172, 5452, 7758, 8178, 12267, 12499, 15516, 16356, 20257, 24534, 24998, 37497, 40514, 49068, 49996, 60771, 74994, 81028, 112491, 121542, 149988, 182313, 224982, 243084, 364626, 449964, 587453, 729252, 1174906, 1762359, 2349812, 3524718, 5287077, 7049436, 10574154, 21148308]

約数ペア:

[(1, 21148308), (2, 10574154), (3, 7049436), (4, 5287077), (6, 3524718), (9, 2349812), (12, 1762359), (18, 1174906), (29, 729252), (36, 587453), (47, 449964), (58, 364626), (87, 243084), (94, 224982), (116, 182313), (141, 149988), (174, 121542), (188, 112491), (261, 81028), (282, 74994), (348, 60771), (423, 49996), (431, 49068), (522, 40514), (564, 37497), (846, 24998), (862, 24534), (1044, 20257), (1293, 16356), (1363, 15516), (1692, 12499), (1724, 12267), (2586, 8178), (2726, 7758), (3879, 5452), (4089, 5172)]