18340161

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{179}}^1$

素因数の和:254

約数の個数: 48

約数和(自身を含む): 31026240

約数和(自身を除く): 12686079

約数列:

[1, 3, 7, 17, 21, 41, 49, 51, 119, 123, 147, 179, 287, 357, 537, 697, 833, 861, 1253, 2009, 2091, 2499, 3043, 3759, 4879, 6027, 7339, 8771, 9129, 14637, 21301, 22017, 26313, 34153, 51373, 63903, 102459, 124763, 149107, 154119, 359611, 374289, 447321, 873341, 1078833, 2620023, 6113387, 18340161]

約数ペア:

[(1, 18340161), (3, 6113387), (7, 2620023), (17, 1078833), (21, 873341), (41, 447321), (49, 374289), (51, 359611), (119, 154119), (123, 149107), (147, 124763), (179, 102459), (287, 63903), (357, 51373), (537, 34153), (697, 26313), (833, 22017), (861, 21301), (1253, 14637), (2009, 9129), (2091, 8771), (2499, 7339), (3043, 6027), (3759, 4879)]