81616500

素因数分解:

$2^2\times 3^2\times 5^3\times 7^1\times {\mathrm{2591}}^1$

素因数の和:2623

約数の個数: 144

約数和(自身を含む): 294368256

約数和(自身を除く): 212751756

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 25, 28, 30, 35, 36, 42, 45, 50, 60, 63, 70, 75, 84, 90, 100, 105, 125, 126, 140, 150, 175, 180, 210, 225, 250, 252, 300, 315, 350, 375, 420, 450, 500, 525, 630, 700, 750, 875, 900, 1050, 1125, 1260, 1500, 1575, 1750, 2100, 2250, 2591, 2625, 3150, 3500, 4500, 5182, 5250, 6300, 7773, 7875, 10364, 10500, 12955, 15546, 15750, 18137, 23319, 25910, 31092, 31500, 36274, 38865, 46638, 51820, 54411, 64775, 72548, 77730, 90685, 93276, 108822, 116595, 129550, 155460, 163233, 181370, 194325, 217644, 233190, 259100, 272055, 323875, 326466, 362740, 388650, 453425, 466380, 544110, 582975, 647750, 652932, 777300, 816165, 906850, 971625, 1088220, 1165950, 1295500, 1360275, 1632330, 1813700, 1943250, 2267125, 2331900, 2720550, 2914875, 3264660, 3886500, 4080825, 4534250, 5441100, 5829750, 6801375, 8161650, 9068500, 11659500, 13602750, 16323300, 20404125, 27205500, 40808250, 81616500]

約数ペア:

[(1, 81616500), (2, 40808250), (3, 27205500), (4, 20404125), (5, 16323300), (6, 13602750), (7, 11659500), (9, 9068500), (10, 8161650), (12, 6801375), (14, 5829750), (15, 5441100), (18, 4534250), (20, 4080825), (21, 3886500), (25, 3264660), (28, 2914875), (30, 2720550), (35, 2331900), (36, 2267125), (42, 1943250), (45, 1813700), (50, 1632330), (60, 1360275), (63, 1295500), (70, 1165950), (75, 1088220), (84, 971625), (90, 906850), (100, 816165), (105, 777300), (125, 652932), (126, 647750), (140, 582975), (150, 544110), (175, 466380), (180, 453425), (210, 388650), (225, 362740), (250, 326466), (252, 323875), (300, 272055), (315, 259100), (350, 233190), (375, 217644), (420, 194325), (450, 181370), (500, 163233), (525, 155460), (630, 129550), (700, 116595), (750, 108822), (875, 93276), (900, 90685), (1050, 77730), (1125, 72548), (1260, 64775), (1500, 54411), (1575, 51820), (1750, 46638), (2100, 38865), (2250, 36274), (2591, 31500), (2625, 31092), (3150, 25910), (3500, 23319), (4500, 18137), (5182, 15750), (5250, 15546), (6300, 12955), (7773, 10500), (7875, 10364)]