256612860

素因数分解:

$2^2\times 3^5\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{397}}^1$

素因数の和:447

約数の個数: 288

約数和(自身を含む): 973539840

約数和(自身を除く): 716926980

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 19, 20, 21, 27, 28, 30, 35, 36, 38, 42, 45, 54, 57, 60, 63, 70, 76, 81, 84, 90, 95, 105, 108, 114, 126, 133, 135, 140, 162, 171, 180, 189, 190, 210, 228, 243, 252, 266, 270, 285, 315, 324, 342, 378, 380, 397, 399, 405, 420, 486, 513, 532, 540, 567, 570, 630, 665, 684, 756, 794, 798, 810, 855, 945, 972, 1026, 1134, 1140, 1191, 1197, 1215, 1260, 1330, 1539, 1588, 1596, 1620, 1701, 1710, 1890, 1985, 1995, 2052, 2268, 2382, 2394, 2430, 2565, 2660, 2779, 2835, 3078, 3402, 3420, 3573, 3591, 3780, 3970, 3990, 4617, 4764, 4788, 4860, 5130, 5558, 5670, 5955, 5985, 6156, 6804, 7146, 7182, 7543, 7695, 7940, 7980, 8337, 8505, 9234, 10260, 10719, 10773, 11116, 11340, 11910, 11970, 13895, 14292, 14364, 15086, 15390, 16674, 17010, 17865, 17955, 18468, 21438, 21546, 22629, 23085, 23820, 23940, 25011, 27790, 30172, 30780, 32157, 32319, 33348, 34020, 35730, 35910, 37715, 41685, 42876, 43092, 45258, 46170, 50022, 52801, 53595, 53865, 55580, 64314, 64638, 67887, 71460, 71820, 75033, 75430, 83370, 90516, 92340, 96471, 100044, 105602, 107190, 107730, 113145, 125055, 128628, 129276, 135774, 150066, 150860, 158403, 160785, 161595, 166740, 192942, 203661, 211204, 214380, 215460, 225099, 226290, 250110, 264005, 271548, 300132, 316806, 321570, 323190, 339435, 375165, 385884, 407322, 450198, 452580, 475209, 482355, 500220, 528010, 610983, 633612, 643140, 646380, 675297, 678870, 750330, 792015, 814644, 900396, 950418, 964710, 1018305, 1056020, 1125495, 1221966, 1350594, 1357740, 1425627, 1500660, 1584030, 1832949, 1900836, 1929420, 2036610, 2250990, 2376045, 2443932, 2701188, 2851254, 3054915, 3168060, 3376485, 3665898, 4073220, 4276881, 4501980, 4752090, 5702508, 6109830, 6752970, 7128135, 7331796, 8553762, 9164745, 9504180, 12219660, 12830643, 13505940, 14256270, 17107524, 18329490, 21384405, 25661286, 28512540, 36658980, 42768810, 51322572, 64153215, 85537620, 128306430, 256612860]

約数ペア:

[(1, 256612860), (2, 128306430), (3, 85537620), (4, 64153215), (5, 51322572), (6, 42768810), (7, 36658980), (9, 28512540), (10, 25661286), (12, 21384405), (14, 18329490), (15, 17107524), (18, 14256270), (19, 13505940), (20, 12830643), (21, 12219660), (27, 9504180), (28, 9164745), (30, 8553762), (35, 7331796), (36, 7128135), (38, 6752970), (42, 6109830), (45, 5702508), (54, 4752090), (57, 4501980), (60, 4276881), (63, 4073220), (70, 3665898), (76, 3376485), (81, 3168060), (84, 3054915), (90, 2851254), (95, 2701188), (105, 2443932), (108, 2376045), (114, 2250990), (126, 2036610), (133, 1929420), (135, 1900836), (140, 1832949), (162, 1584030), (171, 1500660), (180, 1425627), (189, 1357740), (190, 1350594), (210, 1221966), (228, 1125495), (243, 1056020), (252, 1018305), (266, 964710), (270, 950418), (285, 900396), (315, 814644), (324, 792015), (342, 750330), (378, 678870), (380, 675297), (397, 646380), (399, 643140), (405, 633612), (420, 610983), (486, 528010), (513, 500220), (532, 482355), (540, 475209), (567, 452580), (570, 450198), (630, 407322), (665, 385884), (684, 375165), (756, 339435), (794, 323190), (798, 321570), (810, 316806), (855, 300132), (945, 271548), (972, 264005), (1026, 250110), (1134, 226290), (1140, 225099), (1191, 215460), (1197, 214380), (1215, 211204), (1260, 203661), (1330, 192942), (1539, 166740), (1588, 161595), (1596, 160785), (1620, 158403), (1701, 150860), (1710, 150066), (1890, 135774), (1985, 129276), (1995, 128628), (2052, 125055), (2268, 113145), (2382, 107730), (2394, 107190), (2430, 105602), (2565, 100044), (2660, 96471), (2779, 92340), (2835, 90516), (3078, 83370), (3402, 75430), (3420, 75033), (3573, 71820), (3591, 71460), (3780, 67887), (3970, 64638), (3990, 64314), (4617, 55580), (4764, 53865), (4788, 53595), (4860, 52801), (5130, 50022), (5558, 46170), (5670, 45258), (5955, 43092), (5985, 42876), (6156, 41685), (6804, 37715), (7146, 35910), (7182, 35730), (7543, 34020), (7695, 33348), (7940, 32319), (7980, 32157), (8337, 30780), (8505, 30172), (9234, 27790), (10260, 25011), (10719, 23940), (10773, 23820), (11116, 23085), (11340, 22629), (11910, 21546), (11970, 21438), (13895, 18468), (14292, 17955), (14364, 17865), (15086, 17010), (15390, 16674)]