20942640

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1$

素因数の和:124

約数の個数: 240

約数和(自身を含む): 78343200

約数和(自身を除く): 57400560

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 17, 18, 20, 24, 29, 30, 34, 36, 40, 45, 48, 51, 58, 59, 60, 68, 72, 80, 85, 87, 90, 102, 116, 118, 120, 136, 144, 145, 153, 170, 174, 177, 180, 204, 232, 236, 240, 255, 261, 272, 290, 295, 306, 340, 348, 354, 360, 408, 435, 464, 472, 493, 510, 522, 531, 580, 590, 612, 680, 696, 708, 720, 765, 816, 870, 885, 944, 986, 1003, 1020, 1044, 1062, 1160, 1180, 1224, 1305, 1360, 1392, 1416, 1479, 1530, 1711, 1740, 1770, 1972, 2006, 2040, 2088, 2124, 2320, 2360, 2448, 2465, 2610, 2655, 2832, 2958, 3009, 3060, 3422, 3480, 3540, 3944, 4012, 4080, 4176, 4248, 4437, 4720, 4930, 5015, 5133, 5220, 5310, 5916, 6018, 6120, 6844, 6960, 7080, 7395, 7888, 8024, 8496, 8555, 8874, 9027, 9860, 10030, 10266, 10440, 10620, 11832, 12036, 12240, 13688, 14160, 14790, 15045, 15399, 16048, 17110, 17748, 18054, 19720, 20060, 20532, 20880, 21240, 22185, 23664, 24072, 25665, 27376, 29087, 29580, 30090, 30798, 34220, 35496, 36108, 39440, 40120, 41064, 42480, 44370, 45135, 48144, 51330, 58174, 59160, 60180, 61596, 68440, 70992, 72216, 76995, 80240, 82128, 87261, 88740, 90270, 102660, 116348, 118320, 120360, 123192, 136880, 144432, 145435, 153990, 174522, 177480, 180540, 205320, 232696, 240720, 246384, 261783, 290870, 307980, 349044, 354960, 361080, 410640, 436305, 465392, 523566, 581740, 615960, 698088, 722160, 872610, 1047132, 1163480, 1231920, 1308915, 1396176, 1745220, 2094264, 2326960, 2617830, 3490440, 4188528, 5235660, 6980880, 10471320, 20942640]

約数ペア:

[(1, 20942640), (2, 10471320), (3, 6980880), (4, 5235660), (5, 4188528), (6, 3490440), (8, 2617830), (9, 2326960), (10, 2094264), (12, 1745220), (15, 1396176), (16, 1308915), (17, 1231920), (18, 1163480), (20, 1047132), (24, 872610), (29, 722160), (30, 698088), (34, 615960), (36, 581740), (40, 523566), (45, 465392), (48, 436305), (51, 410640), (58, 361080), (59, 354960), (60, 349044), (68, 307980), (72, 290870), (80, 261783), (85, 246384), (87, 240720), (90, 232696), (102, 205320), (116, 180540), (118, 177480), (120, 174522), (136, 153990), (144, 145435), (145, 144432), (153, 136880), (170, 123192), (174, 120360), (177, 118320), (180, 116348), (204, 102660), (232, 90270), (236, 88740), (240, 87261), (255, 82128), (261, 80240), (272, 76995), (290, 72216), (295, 70992), (306, 68440), (340, 61596), (348, 60180), (354, 59160), (360, 58174), (408, 51330), (435, 48144), (464, 45135), (472, 44370), (493, 42480), (510, 41064), (522, 40120), (531, 39440), (580, 36108), (590, 35496), (612, 34220), (680, 30798), (696, 30090), (708, 29580), (720, 29087), (765, 27376), (816, 25665), (870, 24072), (885, 23664), (944, 22185), (986, 21240), (1003, 20880), (1020, 20532), (1044, 20060), (1062, 19720), (1160, 18054), (1180, 17748), (1224, 17110), (1305, 16048), (1360, 15399), (1392, 15045), (1416, 14790), (1479, 14160), (1530, 13688), (1711, 12240), (1740, 12036), (1770, 11832), (1972, 10620), (2006, 10440), (2040, 10266), (2088, 10030), (2124, 9860), (2320, 9027), (2360, 8874), (2448, 8555), (2465, 8496), (2610, 8024), (2655, 7888), (2832, 7395), (2958, 7080), (3009, 6960), (3060, 6844), (3422, 6120), (3480, 6018), (3540, 5916), (3944, 5310), (4012, 5220), (4080, 5133), (4176, 5015), (4248, 4930), (4437, 4720)]