2005575

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1$

素因数の和:65

約数の個数: 72

約数和(自身を含む): 4155984

約数和(自身を除く): 2150409

約数列:

[1, 3, 5, 11, 13, 15, 17, 25, 33, 39, 51, 55, 65, 75, 85, 121, 143, 165, 187, 195, 221, 255, 275, 325, 363, 425, 429, 561, 605, 663, 715, 825, 935, 975, 1105, 1275, 1573, 1815, 2057, 2145, 2431, 2805, 3025, 3315, 3575, 4675, 4719, 5525, 6171, 7293, 7865, 9075, 10285, 10725, 12155, 14025, 16575, 23595, 26741, 30855, 36465, 39325, 51425, 60775, 80223, 117975, 133705, 154275, 182325, 401115, 668525, 2005575]

約数ペア:

[(1, 2005575), (3, 668525), (5, 401115), (11, 182325), (13, 154275), (15, 133705), (17, 117975), (25, 80223), (33, 60775), (39, 51425), (51, 39325), (55, 36465), (65, 30855), (75, 26741), (85, 23595), (121, 16575), (143, 14025), (165, 12155), (187, 10725), (195, 10285), (221, 9075), (255, 7865), (275, 7293), (325, 6171), (363, 5525), (425, 4719), (429, 4675), (561, 3575), (605, 3315), (663, 3025), (715, 2805), (825, 2431), (935, 2145), (975, 2057), (1105, 1815), (1275, 1573)]