256641840

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{3917}}^1$

素因数の和:3956

約数の個数: 240

約数和(自身を含む): 1061057088

約数和(自身を除く): 804415248

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15, 16, 18, 20, 21, 24, 26, 28, 30, 35, 36, 39, 40, 42, 45, 48, 52, 56, 60, 63, 65, 70, 72, 78, 80, 84, 90, 91, 104, 105, 112, 117, 120, 126, 130, 140, 144, 156, 168, 180, 182, 195, 208, 210, 234, 240, 252, 260, 273, 280, 312, 315, 336, 360, 364, 390, 420, 455, 468, 504, 520, 546, 560, 585, 624, 630, 720, 728, 780, 819, 840, 910, 936, 1008, 1040, 1092, 1170, 1260, 1365, 1456, 1560, 1638, 1680, 1820, 1872, 2184, 2340, 2520, 2730, 3120, 3276, 3640, 3917, 4095, 4368, 4680, 5040, 5460, 6552, 7280, 7834, 8190, 9360, 10920, 11751, 13104, 15668, 16380, 19585, 21840, 23502, 27419, 31336, 32760, 35253, 39170, 47004, 50921, 54838, 58755, 62672, 65520, 70506, 78340, 82257, 94008, 101842, 109676, 117510, 137095, 141012, 152763, 156680, 164514, 176265, 188016, 203684, 219352, 235020, 246771, 254605, 274190, 282024, 305526, 313360, 329028, 352530, 356447, 407368, 411285, 438704, 458289, 470040, 493542, 509210, 548380, 564048, 611052, 658056, 705060, 712894, 763815, 814736, 822570, 916578, 940080, 987084, 1018420, 1069341, 1096760, 1222104, 1233855, 1316112, 1410120, 1425788, 1527630, 1645140, 1782235, 1833156, 1974168, 2036840, 2138682, 2193520, 2291445, 2444208, 2467710, 2820240, 2851576, 3055260, 3208023, 3290280, 3564470, 3666312, 3948336, 4073680, 4277364, 4582890, 4935420, 5346705, 5703152, 6110520, 6416046, 6580560, 7128940, 7332624, 8554728, 9165780, 9870840, 10693410, 12221040, 12832092, 14257880, 16040115, 17109456, 18331560, 19741680, 21386820, 25664184, 28515760, 32080230, 36663120, 42773640, 51328368, 64160460, 85547280, 128320920, 256641840]

約数ペア:

[(1, 256641840), (2, 128320920), (3, 85547280), (4, 64160460), (5, 51328368), (6, 42773640), (7, 36663120), (8, 32080230), (9, 28515760), (10, 25664184), (12, 21386820), (13, 19741680), (14, 18331560), (15, 17109456), (16, 16040115), (18, 14257880), (20, 12832092), (21, 12221040), (24, 10693410), (26, 9870840), (28, 9165780), (30, 8554728), (35, 7332624), (36, 7128940), (39, 6580560), (40, 6416046), (42, 6110520), (45, 5703152), (48, 5346705), (52, 4935420), (56, 4582890), (60, 4277364), (63, 4073680), (65, 3948336), (70, 3666312), (72, 3564470), (78, 3290280), (80, 3208023), (84, 3055260), (90, 2851576), (91, 2820240), (104, 2467710), (105, 2444208), (112, 2291445), (117, 2193520), (120, 2138682), (126, 2036840), (130, 1974168), (140, 1833156), (144, 1782235), (156, 1645140), (168, 1527630), (180, 1425788), (182, 1410120), (195, 1316112), (208, 1233855), (210, 1222104), (234, 1096760), (240, 1069341), (252, 1018420), (260, 987084), (273, 940080), (280, 916578), (312, 822570), (315, 814736), (336, 763815), (360, 712894), (364, 705060), (390, 658056), (420, 611052), (455, 564048), (468, 548380), (504, 509210), (520, 493542), (546, 470040), (560, 458289), (585, 438704), (624, 411285), (630, 407368), (720, 356447), (728, 352530), (780, 329028), (819, 313360), (840, 305526), (910, 282024), (936, 274190), (1008, 254605), (1040, 246771), (1092, 235020), (1170, 219352), (1260, 203684), (1365, 188016), (1456, 176265), (1560, 164514), (1638, 156680), (1680, 152763), (1820, 141012), (1872, 137095), (2184, 117510), (2340, 109676), (2520, 101842), (2730, 94008), (3120, 82257), (3276, 78340), (3640, 70506), (3917, 65520), (4095, 62672), (4368, 58755), (4680, 54838), (5040, 50921), (5460, 47004), (6552, 39170), (7280, 35253), (7834, 32760), (8190, 31336), (9360, 27419), (10920, 23502), (11751, 21840), (13104, 19585), (15668, 16380)]