256376820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1$

素因数の和:183

約数の個数: 288

約数和(自身を含む): 900910080

約数和(自身を除く): 644533260

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 29, 30, 31, 35, 42, 49, 58, 60, 62, 70, 84, 87, 93, 97, 98, 105, 116, 124, 140, 145, 147, 155, 174, 186, 194, 196, 203, 210, 217, 245, 290, 291, 294, 310, 348, 372, 388, 406, 420, 434, 435, 465, 485, 490, 580, 582, 588, 609, 620, 651, 679, 735, 812, 868, 870, 899, 930, 970, 980, 1015, 1085, 1164, 1218, 1302, 1358, 1421, 1455, 1470, 1519, 1740, 1798, 1860, 1940, 2030, 2037, 2170, 2436, 2604, 2697, 2716, 2813, 2842, 2910, 2940, 3007, 3038, 3045, 3255, 3395, 3596, 4060, 4074, 4263, 4340, 4495, 4557, 4753, 5394, 5626, 5684, 5820, 6014, 6076, 6090, 6293, 6510, 6790, 7105, 7595, 8148, 8439, 8526, 8990, 9021, 9114, 9506, 10185, 10788, 11252, 12028, 12180, 12586, 13020, 13485, 13580, 14065, 14210, 14259, 15035, 15190, 16878, 17052, 17980, 18042, 18228, 18879, 19012, 19691, 20370, 21049, 21315, 22785, 23765, 25172, 26970, 28130, 28420, 28518, 30070, 30380, 31465, 33756, 36084, 37758, 39382, 40740, 42098, 42195, 42630, 44051, 45105, 45570, 47530, 53940, 56260, 57036, 59073, 60140, 62930, 63147, 71295, 75516, 78764, 84196, 84390, 85260, 87203, 88102, 90210, 91140, 94395, 95060, 98455, 105245, 118146, 125860, 126294, 132153, 137837, 142590, 147343, 168780, 174406, 176204, 180420, 188790, 196910, 210490, 220255, 236292, 252588, 261609, 264306, 275674, 285180, 294686, 295365, 315735, 348812, 377580, 393820, 413511, 420980, 436015, 440510, 442029, 523218, 528612, 551348, 589372, 590730, 610421, 631470, 660765, 689185, 736715, 827022, 872030, 881020, 884058, 1046436, 1181460, 1220842, 1262940, 1308045, 1321530, 1378370, 1473430, 1654044, 1744060, 1768116, 1831263, 2067555, 2210145, 2441684, 2616090, 2643060, 2756740, 2946860, 3052105, 3662526, 4135110, 4272947, 4420290, 5232180, 6104210, 7325052, 8270220, 8545894, 8840580, 9156315, 12208420, 12818841, 17091788, 18312630, 21364735, 25637682, 36625260, 42729470, 51275364, 64094205, 85458940, 128188410, 256376820]

約数ペア:

[(1, 256376820), (2, 128188410), (3, 85458940), (4, 64094205), (5, 51275364), (6, 42729470), (7, 36625260), (10, 25637682), (12, 21364735), (14, 18312630), (15, 17091788), (20, 12818841), (21, 12208420), (28, 9156315), (29, 8840580), (30, 8545894), (31, 8270220), (35, 7325052), (42, 6104210), (49, 5232180), (58, 4420290), (60, 4272947), (62, 4135110), (70, 3662526), (84, 3052105), (87, 2946860), (93, 2756740), (97, 2643060), (98, 2616090), (105, 2441684), (116, 2210145), (124, 2067555), (140, 1831263), (145, 1768116), (147, 1744060), (155, 1654044), (174, 1473430), (186, 1378370), (194, 1321530), (196, 1308045), (203, 1262940), (210, 1220842), (217, 1181460), (245, 1046436), (290, 884058), (291, 881020), (294, 872030), (310, 827022), (348, 736715), (372, 689185), (388, 660765), (406, 631470), (420, 610421), (434, 590730), (435, 589372), (465, 551348), (485, 528612), (490, 523218), (580, 442029), (582, 440510), (588, 436015), (609, 420980), (620, 413511), (651, 393820), (679, 377580), (735, 348812), (812, 315735), (868, 295365), (870, 294686), (899, 285180), (930, 275674), (970, 264306), (980, 261609), (1015, 252588), (1085, 236292), (1164, 220255), (1218, 210490), (1302, 196910), (1358, 188790), (1421, 180420), (1455, 176204), (1470, 174406), (1519, 168780), (1740, 147343), (1798, 142590), (1860, 137837), (1940, 132153), (2030, 126294), (2037, 125860), (2170, 118146), (2436, 105245), (2604, 98455), (2697, 95060), (2716, 94395), (2813, 91140), (2842, 90210), (2910, 88102), (2940, 87203), (3007, 85260), (3038, 84390), (3045, 84196), (3255, 78764), (3395, 75516), (3596, 71295), (4060, 63147), (4074, 62930), (4263, 60140), (4340, 59073), (4495, 57036), (4557, 56260), (4753, 53940), (5394, 47530), (5626, 45570), (5684, 45105), (5820, 44051), (6014, 42630), (6076, 42195), (6090, 42098), (6293, 40740), (6510, 39382), (6790, 37758), (7105, 36084), (7595, 33756), (8148, 31465), (8439, 30380), (8526, 30070), (8990, 28518), (9021, 28420), (9114, 28130), (9506, 26970), (10185, 25172), (10788, 23765), (11252, 22785), (12028, 21315), (12180, 21049), (12586, 20370), (13020, 19691), (13485, 19012), (13580, 18879), (14065, 18228), (14210, 18042), (14259, 17980), (15035, 17052), (15190, 16878)]