261302720

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1$

素因数の和:179

約数の個数: 224

約数和(自身を含む): 758439936

約数和(自身を除く): 497137216

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 32, 35, 40, 53, 56, 62, 64, 70, 71, 80, 106, 112, 124, 140, 142, 155, 160, 212, 217, 224, 248, 265, 280, 284, 310, 320, 355, 371, 424, 434, 448, 496, 497, 530, 560, 568, 620, 710, 742, 848, 868, 992, 994, 1060, 1085, 1120, 1136, 1240, 1420, 1484, 1643, 1696, 1736, 1855, 1984, 1988, 2120, 2170, 2201, 2240, 2272, 2480, 2485, 2840, 2968, 3286, 3392, 3472, 3710, 3763, 3976, 4240, 4340, 4402, 4544, 4960, 4970, 5680, 5936, 6572, 6944, 7420, 7526, 7952, 8215, 8480, 8680, 8804, 9920, 9940, 11005, 11360, 11501, 11872, 13144, 13888, 14840, 15052, 15407, 15904, 16430, 16960, 17360, 17608, 18815, 19880, 22010, 22720, 23002, 23744, 26288, 26341, 29680, 30104, 30814, 31808, 32860, 34720, 35216, 37630, 39760, 44020, 46004, 52576, 52682, 57505, 59360, 60208, 61628, 65720, 69440, 70432, 75260, 77035, 79520, 88040, 92008, 105152, 105364, 115010, 116653, 118720, 120416, 123256, 131440, 131705, 140864, 150520, 154070, 159040, 176080, 184016, 210728, 230020, 233306, 240832, 246512, 262880, 263410, 301040, 308140, 352160, 368032, 421456, 460040, 466612, 493024, 525760, 526820, 583265, 602080, 616280, 704320, 736064, 816571, 842912, 920080, 933224, 986048, 1053640, 1166530, 1204160, 1232560, 1633142, 1685824, 1840160, 1866448, 2107280, 2333060, 2465120, 3266284, 3680320, 3732896, 4082855, 4214560, 4666120, 4930240, 6532568, 7465792, 8165710, 8429120, 9332240, 13065136, 16331420, 18664480, 26130272, 32662840, 37328960, 52260544, 65325680, 130651360, 261302720]

約数ペア:

[(1, 261302720), (2, 130651360), (4, 65325680), (5, 52260544), (7, 37328960), (8, 32662840), (10, 26130272), (14, 18664480), (16, 16331420), (20, 13065136), (28, 9332240), (31, 8429120), (32, 8165710), (35, 7465792), (40, 6532568), (53, 4930240), (56, 4666120), (62, 4214560), (64, 4082855), (70, 3732896), (71, 3680320), (80, 3266284), (106, 2465120), (112, 2333060), (124, 2107280), (140, 1866448), (142, 1840160), (155, 1685824), (160, 1633142), (212, 1232560), (217, 1204160), (224, 1166530), (248, 1053640), (265, 986048), (280, 933224), (284, 920080), (310, 842912), (320, 816571), (355, 736064), (371, 704320), (424, 616280), (434, 602080), (448, 583265), (496, 526820), (497, 525760), (530, 493024), (560, 466612), (568, 460040), (620, 421456), (710, 368032), (742, 352160), (848, 308140), (868, 301040), (992, 263410), (994, 262880), (1060, 246512), (1085, 240832), (1120, 233306), (1136, 230020), (1240, 210728), (1420, 184016), (1484, 176080), (1643, 159040), (1696, 154070), (1736, 150520), (1855, 140864), (1984, 131705), (1988, 131440), (2120, 123256), (2170, 120416), (2201, 118720), (2240, 116653), (2272, 115010), (2480, 105364), (2485, 105152), (2840, 92008), (2968, 88040), (3286, 79520), (3392, 77035), (3472, 75260), (3710, 70432), (3763, 69440), (3976, 65720), (4240, 61628), (4340, 60208), (4402, 59360), (4544, 57505), (4960, 52682), (4970, 52576), (5680, 46004), (5936, 44020), (6572, 39760), (6944, 37630), (7420, 35216), (7526, 34720), (7952, 32860), (8215, 31808), (8480, 30814), (8680, 30104), (8804, 29680), (9920, 26341), (9940, 26288), (11005, 23744), (11360, 23002), (11501, 22720), (11872, 22010), (13144, 19880), (13888, 18815), (14840, 17608), (15052, 17360), (15407, 16960), (15904, 16430)]