28120125

素因数分解:

$3^1\times 5^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{401}}^1$

素因数の和:447

約数の個数: 64

約数和(自身を含む): 54183168

約数和(自身を除く): 26063043

約数列:

[1, 3, 5, 11, 15, 17, 25, 33, 51, 55, 75, 85, 125, 165, 187, 255, 275, 375, 401, 425, 561, 825, 935, 1203, 1275, 1375, 2005, 2125, 2805, 4125, 4411, 4675, 6015, 6375, 6817, 10025, 13233, 14025, 20451, 22055, 23375, 30075, 34085, 50125, 66165, 70125, 74987, 102255, 110275, 150375, 170425, 224961, 330825, 374935, 511275, 551375, 852125, 1124805, 1654125, 1874675, 2556375, 5624025, 9373375, 28120125]

約数ペア:

[(1, 28120125), (3, 9373375), (5, 5624025), (11, 2556375), (15, 1874675), (17, 1654125), (25, 1124805), (33, 852125), (51, 551375), (55, 511275), (75, 374935), (85, 330825), (125, 224961), (165, 170425), (187, 150375), (255, 110275), (275, 102255), (375, 74987), (401, 70125), (425, 66165), (561, 50125), (825, 34085), (935, 30075), (1203, 23375), (1275, 22055), (1375, 20451), (2005, 14025), (2125, 13233), (2805, 10025), (4125, 6817), (4411, 6375), (4675, 6015)]