256818240

素因数分解:

$2^6\times 3^2\times 5^1\times 7^1\times {\mathrm{12739}}^1$

素因数の和:12769

約数の個数: 168

約数和(自身を含む): 1009619520

約数和(自身を除く): 752801280

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, 64, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 140, 144, 160, 168, 180, 192, 210, 224, 240, 252, 280, 288, 315, 320, 336, 360, 420, 448, 480, 504, 560, 576, 630, 672, 720, 840, 960, 1008, 1120, 1260, 1344, 1440, 1680, 2016, 2240, 2520, 2880, 3360, 4032, 5040, 6720, 10080, 12739, 20160, 25478, 38217, 50956, 63695, 76434, 89173, 101912, 114651, 127390, 152868, 178346, 191085, 203824, 229302, 254780, 267519, 305736, 356692, 382170, 407648, 445865, 458604, 509560, 535038, 573255, 611472, 713384, 764340, 802557, 815296, 891730, 917208, 1019120, 1070076, 1146510, 1222944, 1337595, 1426768, 1528680, 1605114, 1783460, 1834416, 2038240, 2140152, 2293020, 2445888, 2675190, 2853536, 3057360, 3210228, 3566920, 3668832, 4012785, 4076480, 4280304, 4586040, 5350380, 5707072, 6114720, 6420456, 7133840, 7337664, 8025570, 8560608, 9172080, 10700760, 12229440, 12840912, 14267680, 16051140, 17121216, 18344160, 21401520, 25681824, 28535360, 32102280, 36688320, 42803040, 51363648, 64204560, 85606080, 128409120, 256818240]

約数ペア:

[(1, 256818240), (2, 128409120), (3, 85606080), (4, 64204560), (5, 51363648), (6, 42803040), (7, 36688320), (8, 32102280), (9, 28535360), (10, 25681824), (12, 21401520), (14, 18344160), (15, 17121216), (16, 16051140), (18, 14267680), (20, 12840912), (21, 12229440), (24, 10700760), (28, 9172080), (30, 8560608), (32, 8025570), (35, 7337664), (36, 7133840), (40, 6420456), (42, 6114720), (45, 5707072), (48, 5350380), (56, 4586040), (60, 4280304), (63, 4076480), (64, 4012785), (70, 3668832), (72, 3566920), (80, 3210228), (84, 3057360), (90, 2853536), (96, 2675190), (105, 2445888), (112, 2293020), (120, 2140152), (126, 2038240), (140, 1834416), (144, 1783460), (160, 1605114), (168, 1528680), (180, 1426768), (192, 1337595), (210, 1222944), (224, 1146510), (240, 1070076), (252, 1019120), (280, 917208), (288, 891730), (315, 815296), (320, 802557), (336, 764340), (360, 713384), (420, 611472), (448, 573255), (480, 535038), (504, 509560), (560, 458604), (576, 445865), (630, 407648), (672, 382170), (720, 356692), (840, 305736), (960, 267519), (1008, 254780), (1120, 229302), (1260, 203824), (1344, 191085), (1440, 178346), (1680, 152868), (2016, 127390), (2240, 114651), (2520, 101912), (2880, 89173), (3360, 76434), (4032, 63695), (5040, 50956), (6720, 38217), (10080, 25478), (12739, 20160)]