28040013

素因数分解:

$3^5\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{173}}^1$

素因数の和:240

約数の個数: 48

約数和(自身を含む): 45601920

約数和(自身を除く): 17561907

約数列:

[1, 3, 9, 23, 27, 29, 69, 81, 87, 173, 207, 243, 261, 519, 621, 667, 783, 1557, 1863, 2001, 2349, 3979, 4671, 5017, 5589, 6003, 7047, 11937, 14013, 15051, 18009, 35811, 42039, 45153, 54027, 107433, 115391, 135459, 162081, 322299, 346173, 406377, 966897, 1038519, 1219131, 3115557, 9346671, 28040013]

約数ペア:

[(1, 28040013), (3, 9346671), (9, 3115557), (23, 1219131), (27, 1038519), (29, 966897), (69, 406377), (81, 346173), (87, 322299), (173, 162081), (207, 135459), (243, 115391), (261, 107433), (519, 54027), (621, 45153), (667, 42039), (783, 35811), (1557, 18009), (1863, 15051), (2001, 14013), (2349, 11937), (3979, 7047), (4671, 6003), (5017, 5589)]