20478657640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{239}}^1\times {\mathrm{383}}^1$

素因数の和:704

約数の個数: 256

約数和(自身を含む): 57330892800

約数和(自身を除く): 36852235160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 28, 34, 35, 40, 47, 56, 68, 70, 85, 94, 119, 136, 140, 170, 188, 235, 238, 239, 280, 329, 340, 376, 383, 470, 476, 478, 595, 658, 680, 766, 799, 940, 952, 956, 1190, 1195, 1316, 1532, 1598, 1645, 1673, 1880, 1912, 1915, 2380, 2390, 2632, 2681, 3064, 3196, 3290, 3346, 3830, 3995, 4063, 4760, 4780, 5362, 5593, 6392, 6511, 6580, 6692, 7660, 7990, 8126, 8365, 9560, 10724, 11186, 11233, 13022, 13160, 13384, 13405, 15320, 15980, 16252, 16730, 18001, 20315, 21448, 22372, 22466, 26044, 26810, 27965, 28441, 31960, 32504, 32555, 33460, 36002, 40630, 44744, 44932, 45577, 52088, 53620, 55930, 56165, 56882, 65110, 66920, 72004, 78631, 81260, 89864, 90005, 91154, 91537, 107240, 111860, 112330, 113764, 126007, 130220, 142205, 144008, 157262, 162520, 180010, 182308, 183074, 190961, 223720, 224660, 227528, 227885, 252014, 260440, 284410, 306017, 314524, 360020, 364616, 366148, 381922, 393155, 449320, 455770, 457685, 504028, 568820, 612034, 629048, 630035, 640759, 720040, 732296, 763844, 786310, 911540, 915370, 954805, 1008056, 1137640, 1224068, 1260070, 1281518, 1336727, 1527688, 1530085, 1556129, 1572620, 1823080, 1830740, 1909610, 2142119, 2448136, 2520140, 2563036, 2673454, 3060170, 3112258, 3145240, 3203795, 3661480, 3819220, 4284238, 4302239, 5040280, 5126072, 5346908, 6120340, 6224516, 6407590, 6683635, 7638440, 7780645, 8568476, 8604478, 10693816, 10710595, 10892903, 12240680, 12449032, 12815180, 13367270, 15561290, 17136952, 17208956, 21421190, 21511195, 21785806, 25630360, 26734540, 30115673, 31122580, 34417912, 42842380, 43022390, 43571612, 53469080, 54464515, 60231346, 62245160, 73138063, 85684760, 86044780, 87143224, 108929030, 120462692, 146276126, 150578365, 172089560, 217858060, 240925384, 292552252, 301156730, 365690315, 435716120, 511966441, 585104504, 602313460, 731380630, 1023932882, 1204626920, 1462761260, 2047865764, 2559832205, 2925522520, 4095731528, 5119664410, 10239328820, 20478657640]

約数ペア:

[(1, 20478657640), (2, 10239328820), (4, 5119664410), (5, 4095731528), (7, 2925522520), (8, 2559832205), (10, 2047865764), (14, 1462761260), (17, 1204626920), (20, 1023932882), (28, 731380630), (34, 602313460), (35, 585104504), (40, 511966441), (47, 435716120), (56, 365690315), (68, 301156730), (70, 292552252), (85, 240925384), (94, 217858060), (119, 172089560), (136, 150578365), (140, 146276126), (170, 120462692), (188, 108929030), (235, 87143224), (238, 86044780), (239, 85684760), (280, 73138063), (329, 62245160), (340, 60231346), (376, 54464515), (383, 53469080), (470, 43571612), (476, 43022390), (478, 42842380), (595, 34417912), (658, 31122580), (680, 30115673), (766, 26734540), (799, 25630360), (940, 21785806), (952, 21511195), (956, 21421190), (1190, 17208956), (1195, 17136952), (1316, 15561290), (1532, 13367270), (1598, 12815180), (1645, 12449032), (1673, 12240680), (1880, 10892903), (1912, 10710595), (1915, 10693816), (2380, 8604478), (2390, 8568476), (2632, 7780645), (2681, 7638440), (3064, 6683635), (3196, 6407590), (3290, 6224516), (3346, 6120340), (3830, 5346908), (3995, 5126072), (4063, 5040280), (4760, 4302239), (4780, 4284238), (5362, 3819220), (5593, 3661480), (6392, 3203795), (6511, 3145240), (6580, 3112258), (6692, 3060170), (7660, 2673454), (7990, 2563036), (8126, 2520140), (8365, 2448136), (9560, 2142119), (10724, 1909610), (11186, 1830740), (11233, 1823080), (13022, 1572620), (13160, 1556129), (13384, 1530085), (13405, 1527688), (15320, 1336727), (15980, 1281518), (16252, 1260070), (16730, 1224068), (18001, 1137640), (20315, 1008056), (21448, 954805), (22372, 915370), (22466, 911540), (26044, 786310), (26810, 763844), (27965, 732296), (28441, 720040), (31960, 640759), (32504, 630035), (32555, 629048), (33460, 612034), (36002, 568820), (40630, 504028), (44744, 457685), (44932, 455770), (45577, 449320), (52088, 393155), (53620, 381922), (55930, 366148), (56165, 364616), (56882, 360020), (65110, 314524), (66920, 306017), (72004, 284410), (78631, 260440), (81260, 252014), (89864, 227885), (90005, 227528), (91154, 224660), (91537, 223720), (107240, 190961), (111860, 183074), (112330, 182308), (113764, 180010), (126007, 162520), (130220, 157262), (142205, 144008)]