205920540

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{631}}^1$

素因数の和:697

約数の個数: 216

約数和(自身を含む): 747425952

約数和(自身を除く): 541505412

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 37, 42, 45, 49, 60, 63, 70, 74, 84, 90, 98, 105, 111, 126, 140, 147, 148, 180, 185, 196, 210, 222, 245, 252, 259, 294, 315, 333, 370, 420, 441, 444, 490, 518, 555, 588, 630, 631, 666, 735, 740, 777, 882, 980, 1036, 1110, 1260, 1262, 1295, 1332, 1470, 1554, 1665, 1764, 1813, 1893, 2205, 2220, 2331, 2524, 2590, 2940, 3108, 3155, 3330, 3626, 3786, 3885, 4410, 4417, 4662, 5180, 5439, 5679, 6310, 6660, 7252, 7572, 7770, 8820, 8834, 9065, 9324, 9465, 10878, 11358, 11655, 12620, 13251, 15540, 16317, 17668, 18130, 18930, 21756, 22085, 22716, 23310, 23347, 26502, 27195, 28395, 30919, 32634, 36260, 37860, 39753, 44170, 46620, 46694, 53004, 54390, 56790, 61838, 65268, 66255, 70041, 79506, 81585, 88340, 92757, 93388, 108780, 113580, 116735, 123676, 132510, 140082, 154595, 159012, 163170, 163429, 185514, 198765, 210123, 233470, 265020, 278271, 280164, 309190, 326340, 326858, 350205, 371028, 397530, 420246, 463785, 466940, 490287, 556542, 618380, 653716, 700410, 795060, 817145, 840492, 927570, 980574, 1050615, 1113084, 1144003, 1391355, 1400820, 1470861, 1634290, 1855140, 1961148, 2101230, 2288006, 2451435, 2782710, 2941722, 3268580, 3432009, 4202460, 4576012, 4902870, 5565420, 5720015, 5883444, 6864018, 7354305, 9805740, 10296027, 11440030, 13728036, 14708610, 17160045, 20592054, 22880060, 29417220, 34320090, 41184108, 51480135, 68640180, 102960270, 205920540]

約数ペア:

[(1, 205920540), (2, 102960270), (3, 68640180), (4, 51480135), (5, 41184108), (6, 34320090), (7, 29417220), (9, 22880060), (10, 20592054), (12, 17160045), (14, 14708610), (15, 13728036), (18, 11440030), (20, 10296027), (21, 9805740), (28, 7354305), (30, 6864018), (35, 5883444), (36, 5720015), (37, 5565420), (42, 4902870), (45, 4576012), (49, 4202460), (60, 3432009), (63, 3268580), (70, 2941722), (74, 2782710), (84, 2451435), (90, 2288006), (98, 2101230), (105, 1961148), (111, 1855140), (126, 1634290), (140, 1470861), (147, 1400820), (148, 1391355), (180, 1144003), (185, 1113084), (196, 1050615), (210, 980574), (222, 927570), (245, 840492), (252, 817145), (259, 795060), (294, 700410), (315, 653716), (333, 618380), (370, 556542), (420, 490287), (441, 466940), (444, 463785), (490, 420246), (518, 397530), (555, 371028), (588, 350205), (630, 326858), (631, 326340), (666, 309190), (735, 280164), (740, 278271), (777, 265020), (882, 233470), (980, 210123), (1036, 198765), (1110, 185514), (1260, 163429), (1262, 163170), (1295, 159012), (1332, 154595), (1470, 140082), (1554, 132510), (1665, 123676), (1764, 116735), (1813, 113580), (1893, 108780), (2205, 93388), (2220, 92757), (2331, 88340), (2524, 81585), (2590, 79506), (2940, 70041), (3108, 66255), (3155, 65268), (3330, 61838), (3626, 56790), (3786, 54390), (3885, 53004), (4410, 46694), (4417, 46620), (4662, 44170), (5180, 39753), (5439, 37860), (5679, 36260), (6310, 32634), (6660, 30919), (7252, 28395), (7572, 27195), (7770, 26502), (8820, 23347), (8834, 23310), (9065, 22716), (9324, 22085), (9465, 21756), (10878, 18930), (11358, 18130), (11655, 17668), (12620, 16317), (13251, 15540)]