217971540

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{449}}^1$

素因数の和:527

約数の個数: 192

約数和(自身を含む): 725760000

約数和(自身を除く): 507788460

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 29, 30, 31, 36, 45, 54, 58, 60, 62, 87, 90, 93, 108, 116, 124, 135, 145, 155, 174, 180, 186, 261, 270, 279, 290, 310, 348, 372, 435, 449, 465, 522, 540, 558, 580, 620, 783, 837, 870, 898, 899, 930, 1044, 1116, 1305, 1347, 1395, 1566, 1674, 1740, 1796, 1798, 1860, 2245, 2610, 2694, 2697, 2790, 3132, 3348, 3596, 3915, 4041, 4185, 4490, 4495, 5220, 5388, 5394, 5580, 6735, 7830, 8082, 8091, 8370, 8980, 8990, 10788, 12123, 13021, 13470, 13485, 13919, 15660, 16164, 16182, 16740, 17980, 20205, 24246, 24273, 26042, 26940, 26970, 27838, 32364, 39063, 40410, 40455, 41757, 48492, 48546, 52084, 53940, 55676, 60615, 65105, 69595, 78126, 80820, 80910, 83514, 97092, 117189, 121230, 121365, 125271, 130210, 139190, 156252, 161820, 167028, 195315, 208785, 234378, 242460, 242730, 250542, 260420, 278380, 351567, 375813, 390630, 403651, 417570, 468756, 485460, 501084, 585945, 626355, 703134, 751626, 781260, 807302, 835140, 1171890, 1210953, 1252710, 1406268, 1503252, 1614604, 1757835, 1879065, 2018255, 2343780, 2421906, 2505420, 3515670, 3632859, 3758130, 4036510, 4843812, 6054765, 7031340, 7265718, 7516260, 8073020, 10898577, 12109530, 14531436, 18164295, 21797154, 24219060, 36328590, 43594308, 54492885, 72657180, 108985770, 217971540]

約数ペア:

[(1, 217971540), (2, 108985770), (3, 72657180), (4, 54492885), (5, 43594308), (6, 36328590), (9, 24219060), (10, 21797154), (12, 18164295), (15, 14531436), (18, 12109530), (20, 10898577), (27, 8073020), (29, 7516260), (30, 7265718), (31, 7031340), (36, 6054765), (45, 4843812), (54, 4036510), (58, 3758130), (60, 3632859), (62, 3515670), (87, 2505420), (90, 2421906), (93, 2343780), (108, 2018255), (116, 1879065), (124, 1757835), (135, 1614604), (145, 1503252), (155, 1406268), (174, 1252710), (180, 1210953), (186, 1171890), (261, 835140), (270, 807302), (279, 781260), (290, 751626), (310, 703134), (348, 626355), (372, 585945), (435, 501084), (449, 485460), (465, 468756), (522, 417570), (540, 403651), (558, 390630), (580, 375813), (620, 351567), (783, 278380), (837, 260420), (870, 250542), (898, 242730), (899, 242460), (930, 234378), (1044, 208785), (1116, 195315), (1305, 167028), (1347, 161820), (1395, 156252), (1566, 139190), (1674, 130210), (1740, 125271), (1796, 121365), (1798, 121230), (1860, 117189), (2245, 97092), (2610, 83514), (2694, 80910), (2697, 80820), (2790, 78126), (3132, 69595), (3348, 65105), (3596, 60615), (3915, 55676), (4041, 53940), (4185, 52084), (4490, 48546), (4495, 48492), (5220, 41757), (5388, 40455), (5394, 40410), (5580, 39063), (6735, 32364), (7830, 27838), (8082, 26970), (8091, 26940), (8370, 26042), (8980, 24273), (8990, 24246), (10788, 20205), (12123, 17980), (13021, 16740), (13470, 16182), (13485, 16164), (13919, 15660)]