18515238

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{887}}^1$

素因数の和:977

約数の個数: 48

約数和(自身を含む): 43732224

約数和(自身を除く): 25216986

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 49, 71, 98, 142, 147, 213, 294, 426, 497, 887, 994, 1491, 1774, 2661, 2982, 3479, 5322, 6209, 6958, 10437, 12418, 18627, 20874, 37254, 43463, 62977, 86926, 125954, 130389, 188931, 260778, 377862, 440839, 881678, 1322517, 2645034, 3085873, 6171746, 9257619, 18515238]

約数ペア:

[(1, 18515238), (2, 9257619), (3, 6171746), (6, 3085873), (7, 2645034), (14, 1322517), (21, 881678), (42, 440839), (49, 377862), (71, 260778), (98, 188931), (142, 130389), (147, 125954), (213, 86926), (294, 62977), (426, 43463), (497, 37254), (887, 20874), (994, 18627), (1491, 12418), (1774, 10437), (2661, 6958), (2982, 6209), (3479, 5322)]