256566240

素因数分解:

$2^5\times 3^2\times 5^1\times 7^1\times {\mathrm{25453}}^1$

素因数の和:25481

約数の個数: 144

約数和(自身を含む): 1000647648

約数和(自身を除く): 744081408

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 140, 144, 160, 168, 180, 210, 224, 240, 252, 280, 288, 315, 336, 360, 420, 480, 504, 560, 630, 672, 720, 840, 1008, 1120, 1260, 1440, 1680, 2016, 2520, 3360, 5040, 10080, 25453, 50906, 76359, 101812, 127265, 152718, 178171, 203624, 229077, 254530, 305436, 356342, 381795, 407248, 458154, 509060, 534513, 610872, 712684, 763590, 814496, 890855, 916308, 1018120, 1069026, 1145385, 1221744, 1425368, 1527180, 1603539, 1781710, 1832616, 2036240, 2138052, 2290770, 2443488, 2672565, 2850736, 3054360, 3207078, 3563420, 3665232, 4072480, 4276104, 4581540, 5345130, 5701472, 6108720, 6414156, 7126840, 7330464, 8017695, 8552208, 9163080, 10690260, 12217440, 12828312, 14253680, 16035390, 17104416, 18326160, 21380520, 25656624, 28507360, 32070780, 36652320, 42761040, 51313248, 64141560, 85522080, 128283120, 256566240]

約数ペア:

[(1, 256566240), (2, 128283120), (3, 85522080), (4, 64141560), (5, 51313248), (6, 42761040), (7, 36652320), (8, 32070780), (9, 28507360), (10, 25656624), (12, 21380520), (14, 18326160), (15, 17104416), (16, 16035390), (18, 14253680), (20, 12828312), (21, 12217440), (24, 10690260), (28, 9163080), (30, 8552208), (32, 8017695), (35, 7330464), (36, 7126840), (40, 6414156), (42, 6108720), (45, 5701472), (48, 5345130), (56, 4581540), (60, 4276104), (63, 4072480), (70, 3665232), (72, 3563420), (80, 3207078), (84, 3054360), (90, 2850736), (96, 2672565), (105, 2443488), (112, 2290770), (120, 2138052), (126, 2036240), (140, 1832616), (144, 1781710), (160, 1603539), (168, 1527180), (180, 1425368), (210, 1221744), (224, 1145385), (240, 1069026), (252, 1018120), (280, 916308), (288, 890855), (315, 814496), (336, 763590), (360, 712684), (420, 610872), (480, 534513), (504, 509060), (560, 458154), (630, 407248), (672, 381795), (720, 356342), (840, 305436), (1008, 254530), (1120, 229077), (1260, 203624), (1440, 178171), (1680, 152718), (2016, 127265), (2520, 101812), (3360, 76359), (5040, 50906), (10080, 25453)]