256581360

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{50909}}^1$

素因数の和:50935

約数の個数: 120

約数和(自身を含む): 984803040

約数和(自身を除く): 728221680

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 105, 112, 120, 126, 140, 144, 168, 180, 210, 240, 252, 280, 315, 336, 360, 420, 504, 560, 630, 720, 840, 1008, 1260, 1680, 2520, 5040, 50909, 101818, 152727, 203636, 254545, 305454, 356363, 407272, 458181, 509090, 610908, 712726, 763635, 814544, 916362, 1018180, 1069089, 1221816, 1425452, 1527270, 1781815, 1832724, 2036360, 2138178, 2290905, 2443632, 2850904, 3054540, 3207267, 3563630, 3665448, 4072720, 4276356, 4581810, 5345445, 5701808, 6109080, 6414534, 7127260, 7330896, 8552712, 9163620, 10690890, 12218160, 12829068, 14254520, 16036335, 17105424, 18327240, 21381780, 25658136, 28509040, 32072670, 36654480, 42763560, 51316272, 64145340, 85527120, 128290680, 256581360]

約数ペア:

[(1, 256581360), (2, 128290680), (3, 85527120), (4, 64145340), (5, 51316272), (6, 42763560), (7, 36654480), (8, 32072670), (9, 28509040), (10, 25658136), (12, 21381780), (14, 18327240), (15, 17105424), (16, 16036335), (18, 14254520), (20, 12829068), (21, 12218160), (24, 10690890), (28, 9163620), (30, 8552712), (35, 7330896), (36, 7127260), (40, 6414534), (42, 6109080), (45, 5701808), (48, 5345445), (56, 4581810), (60, 4276356), (63, 4072720), (70, 3665448), (72, 3563630), (80, 3207267), (84, 3054540), (90, 2850904), (105, 2443632), (112, 2290905), (120, 2138178), (126, 2036360), (140, 1832724), (144, 1781815), (168, 1527270), (180, 1425452), (210, 1221816), (240, 1069089), (252, 1018180), (280, 916362), (315, 814544), (336, 763635), (360, 712726), (420, 610908), (504, 509090), (560, 458181), (630, 407272), (720, 356363), (840, 305454), (1008, 254545), (1260, 203636), (1680, 152727), (2520, 101818), (5040, 50909)]