810321720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{521}}^1\times {\mathrm{997}}^1$

素因数の和:1545

約数の個数: 128

約数和(自身を含む): 2625618240

約数和(自身を除く): 1815296520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 521, 780, 997, 1042, 1560, 1563, 1994, 2084, 2605, 2991, 3126, 3988, 4168, 4985, 5210, 5982, 6252, 6773, 7815, 7976, 9970, 10420, 11964, 12504, 12961, 13546, 14955, 15630, 19940, 20319, 20840, 23928, 25922, 27092, 29910, 31260, 33865, 38883, 39880, 40638, 51844, 54184, 59820, 62520, 64805, 67730, 77766, 81276, 101595, 103688, 119640, 129610, 135460, 155532, 162552, 194415, 203190, 259220, 270920, 311064, 388830, 406380, 518440, 519437, 777660, 812760, 1038874, 1555320, 1558311, 2077748, 2597185, 3116622, 4155496, 5194370, 6233244, 6752681, 7791555, 10388740, 12466488, 13505362, 15583110, 20258043, 20777480, 27010724, 31166220, 33763405, 40516086, 54021448, 62332440, 67526810, 81032172, 101290215, 135053620, 162064344, 202580430, 270107240, 405160860, 810321720]

約数ペア:

[(1, 810321720), (2, 405160860), (3, 270107240), (4, 202580430), (5, 162064344), (6, 135053620), (8, 101290215), (10, 81032172), (12, 67526810), (13, 62332440), (15, 54021448), (20, 40516086), (24, 33763405), (26, 31166220), (30, 27010724), (39, 20777480), (40, 20258043), (52, 15583110), (60, 13505362), (65, 12466488), (78, 10388740), (104, 7791555), (120, 6752681), (130, 6233244), (156, 5194370), (195, 4155496), (260, 3116622), (312, 2597185), (390, 2077748), (520, 1558311), (521, 1555320), (780, 1038874), (997, 812760), (1042, 777660), (1560, 519437), (1563, 518440), (1994, 406380), (2084, 388830), (2605, 311064), (2991, 270920), (3126, 259220), (3988, 203190), (4168, 194415), (4985, 162552), (5210, 155532), (5982, 135460), (6252, 129610), (6773, 119640), (7815, 103688), (7976, 101595), (9970, 81276), (10420, 77766), (11964, 67730), (12504, 64805), (12961, 62520), (13546, 59820), (14955, 54184), (15630, 51844), (19940, 40638), (20319, 39880), (20840, 38883), (23928, 33865), (25922, 31260), (27092, 29910)]