18149943

素因数分解:

$3^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1$

素因数の和:172

約数の個数: 48

約数和(自身を含む): 29942784

約数和(自身を除く): 11792841

約数列:

[1, 3, 7, 21, 37, 47, 49, 71, 111, 141, 147, 213, 259, 329, 497, 777, 987, 1491, 1739, 1813, 2303, 2627, 3337, 3479, 5217, 5439, 6909, 7881, 10011, 10437, 12173, 18389, 23359, 36519, 55167, 70077, 85211, 123469, 128723, 163513, 255633, 370407, 386169, 490539, 864283, 2592849, 6049981, 18149943]

約数ペア:

[(1, 18149943), (3, 6049981), (7, 2592849), (21, 864283), (37, 490539), (47, 386169), (49, 370407), (71, 255633), (111, 163513), (141, 128723), (147, 123469), (213, 85211), (259, 70077), (329, 55167), (497, 36519), (777, 23359), (987, 18389), (1491, 12173), (1739, 10437), (1813, 10011), (2303, 7881), (2627, 6909), (3337, 5439), (3479, 5217)]