128280720

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{269}}^1\times {\mathrm{1987}}^1$

素因数の和:2272

約数の個数: 80

約数和(自身を含む): 399349440

約数和(自身を除く): 271068720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 269, 538, 807, 1076, 1345, 1614, 1987, 2152, 2690, 3228, 3974, 4035, 4304, 5380, 5961, 6456, 7948, 8070, 9935, 10760, 11922, 12912, 15896, 16140, 19870, 21520, 23844, 29805, 31792, 32280, 39740, 47688, 59610, 64560, 79480, 95376, 119220, 158960, 238440, 476880, 534503, 1069006, 1603509, 2138012, 2672515, 3207018, 4276024, 5345030, 6414036, 8017545, 8552048, 10690060, 12828072, 16035090, 21380120, 25656144, 32070180, 42760240, 64140360, 128280720]

約数ペア:

[(1, 128280720), (2, 64140360), (3, 42760240), (4, 32070180), (5, 25656144), (6, 21380120), (8, 16035090), (10, 12828072), (12, 10690060), (15, 8552048), (16, 8017545), (20, 6414036), (24, 5345030), (30, 4276024), (40, 3207018), (48, 2672515), (60, 2138012), (80, 1603509), (120, 1069006), (240, 534503), (269, 476880), (538, 238440), (807, 158960), (1076, 119220), (1345, 95376), (1614, 79480), (1987, 64560), (2152, 59610), (2690, 47688), (3228, 39740), (3974, 32280), (4035, 31792), (4304, 29805), (5380, 23844), (5961, 21520), (6456, 19870), (7948, 16140), (8070, 15896), (9935, 12912), (10760, 11922)]