18905931

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{23}}^2$

素因数の和:101

約数の個数: 54

約数和(自身を含む): 32868108

約数和(自身を除く): 13962177

約数列:

[1, 3, 9, 11, 19, 23, 33, 57, 69, 99, 171, 207, 209, 253, 361, 437, 529, 627, 759, 1083, 1311, 1587, 1881, 2277, 3249, 3933, 3971, 4761, 4807, 5819, 8303, 10051, 11913, 14421, 17457, 24909, 30153, 35739, 43263, 52371, 74727, 90459, 91333, 110561, 190969, 273999, 331683, 572907, 821997, 995049, 1718721, 2100659, 6301977, 18905931]

約数ペア:

[(1, 18905931), (3, 6301977), (9, 2100659), (11, 1718721), (19, 995049), (23, 821997), (33, 572907), (57, 331683), (69, 273999), (99, 190969), (171, 110561), (207, 91333), (209, 90459), (253, 74727), (361, 52371), (437, 43263), (529, 35739), (627, 30153), (759, 24909), (1083, 17457), (1311, 14421), (1587, 11913), (1881, 10051), (2277, 8303), (3249, 5819), (3933, 4807), (3971, 4761)]