81139929

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{313}}^1$

素因数の和:386

約数の個数: 48

約数和(自身を含む): 129558912

約数和(自身を除く): 48418983

約数列:

[1, 3, 13, 17, 23, 39, 51, 69, 221, 289, 299, 313, 391, 663, 867, 897, 939, 1173, 3757, 4069, 5083, 5321, 6647, 7199, 11271, 12207, 15249, 15963, 19941, 21597, 69173, 86411, 90457, 93587, 122383, 207519, 259233, 271371, 280761, 367149, 1175941, 1590979, 2080511, 3527823, 4772937, 6241533, 27046643, 81139929]

約数ペア:

[(1, 81139929), (3, 27046643), (13, 6241533), (17, 4772937), (23, 3527823), (39, 2080511), (51, 1590979), (69, 1175941), (221, 367149), (289, 280761), (299, 271371), (313, 259233), (391, 207519), (663, 122383), (867, 93587), (897, 90457), (939, 86411), (1173, 69173), (3757, 21597), (4069, 19941), (5083, 15963), (5321, 15249), (6647, 12207), (7199, 11271)]