256585680

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{347}}^1$

素因数の和:458

約数の個数: 240

約数和(自身を含む): 942439680

約数和(自身を除く): 685854000

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 30, 36, 39, 40, 45, 48, 52, 60, 65, 72, 78, 79, 80, 90, 104, 117, 120, 130, 144, 156, 158, 180, 195, 208, 234, 237, 240, 260, 312, 316, 347, 360, 390, 395, 468, 474, 520, 585, 624, 632, 694, 711, 720, 780, 790, 936, 948, 1027, 1040, 1041, 1170, 1185, 1264, 1388, 1422, 1560, 1580, 1735, 1872, 1896, 2054, 2082, 2340, 2370, 2776, 2844, 3081, 3120, 3123, 3160, 3470, 3555, 3792, 4108, 4164, 4511, 4680, 4740, 5135, 5205, 5552, 5688, 6162, 6246, 6320, 6940, 7110, 8216, 8328, 9022, 9243, 9360, 9480, 10270, 10410, 11376, 12324, 12492, 13533, 13880, 14220, 15405, 15615, 16432, 16656, 18044, 18486, 18960, 20540, 20820, 22555, 24648, 24984, 27066, 27413, 27760, 28440, 30810, 31230, 36088, 36972, 40599, 41080, 41640, 45110, 46215, 49296, 49968, 54132, 54826, 56880, 61620, 62460, 67665, 72176, 73944, 81198, 82160, 82239, 83280, 90220, 92430, 108264, 109652, 123240, 124920, 135330, 137065, 147888, 162396, 164478, 180440, 184860, 202995, 216528, 219304, 246480, 246717, 249840, 270660, 274130, 324792, 328956, 356369, 360880, 369720, 405990, 411195, 438608, 493434, 541320, 548260, 649584, 657912, 712738, 739440, 811980, 822390, 986868, 1069107, 1082640, 1096520, 1233585, 1315824, 1425476, 1623960, 1644780, 1781845, 1973736, 2138214, 2193040, 2467170, 2850952, 3207321, 3247920, 3289560, 3563690, 3947472, 4276428, 4934340, 5345535, 5701904, 6414642, 6579120, 7127380, 8552856, 9868680, 10691070, 12829284, 14254760, 16036605, 17105712, 19737360, 21382140, 25658568, 28509520, 32073210, 42764280, 51317136, 64146420, 85528560, 128292840, 256585680]

約数ペア:

[(1, 256585680), (2, 128292840), (3, 85528560), (4, 64146420), (5, 51317136), (6, 42764280), (8, 32073210), (9, 28509520), (10, 25658568), (12, 21382140), (13, 19737360), (15, 17105712), (16, 16036605), (18, 14254760), (20, 12829284), (24, 10691070), (26, 9868680), (30, 8552856), (36, 7127380), (39, 6579120), (40, 6414642), (45, 5701904), (48, 5345535), (52, 4934340), (60, 4276428), (65, 3947472), (72, 3563690), (78, 3289560), (79, 3247920), (80, 3207321), (90, 2850952), (104, 2467170), (117, 2193040), (120, 2138214), (130, 1973736), (144, 1781845), (156, 1644780), (158, 1623960), (180, 1425476), (195, 1315824), (208, 1233585), (234, 1096520), (237, 1082640), (240, 1069107), (260, 986868), (312, 822390), (316, 811980), (347, 739440), (360, 712738), (390, 657912), (395, 649584), (468, 548260), (474, 541320), (520, 493434), (585, 438608), (624, 411195), (632, 405990), (694, 369720), (711, 360880), (720, 356369), (780, 328956), (790, 324792), (936, 274130), (948, 270660), (1027, 249840), (1040, 246717), (1041, 246480), (1170, 219304), (1185, 216528), (1264, 202995), (1388, 184860), (1422, 180440), (1560, 164478), (1580, 162396), (1735, 147888), (1872, 137065), (1896, 135330), (2054, 124920), (2082, 123240), (2340, 109652), (2370, 108264), (2776, 92430), (2844, 90220), (3081, 83280), (3120, 82239), (3123, 82160), (3160, 81198), (3470, 73944), (3555, 72176), (3792, 67665), (4108, 62460), (4164, 61620), (4511, 56880), (4680, 54826), (4740, 54132), (5135, 49968), (5205, 49296), (5552, 46215), (5688, 45110), (6162, 41640), (6246, 41080), (6320, 40599), (6940, 36972), (7110, 36088), (8216, 31230), (8328, 30810), (9022, 28440), (9243, 27760), (9360, 27413), (9480, 27066), (10270, 24984), (10410, 24648), (11376, 22555), (12324, 20820), (12492, 20540), (13533, 18960), (13880, 18486), (14220, 18044), (15405, 16656), (15615, 16432)]