217191520

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{2131}}^1$

素因数の和:2173

約数の個数: 144

約数和(自身を含む): 643105008

約数和(自身を除く): 425913488

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 49, 52, 56, 65, 70, 80, 91, 98, 104, 112, 130, 140, 160, 182, 196, 208, 224, 245, 260, 280, 364, 392, 416, 455, 490, 520, 560, 637, 728, 784, 910, 980, 1040, 1120, 1274, 1456, 1568, 1820, 1960, 2080, 2131, 2548, 2912, 3185, 3640, 3920, 4262, 5096, 6370, 7280, 7840, 8524, 10192, 10655, 12740, 14560, 14917, 17048, 20384, 21310, 25480, 27703, 29834, 34096, 42620, 50960, 55406, 59668, 68192, 74585, 85240, 101920, 104419, 110812, 119336, 138515, 149170, 170480, 193921, 208838, 221624, 238672, 277030, 298340, 340960, 387842, 417676, 443248, 477344, 522095, 554060, 596680, 775684, 835352, 886496, 969605, 1044190, 1108120, 1193360, 1357447, 1551368, 1670704, 1939210, 2088380, 2216240, 2386720, 2714894, 3102736, 3341408, 3878420, 4176760, 4432480, 5429788, 6205472, 6787235, 7756840, 8353520, 10859576, 13574470, 15513680, 16707040, 21719152, 27148940, 31027360, 43438304, 54297880, 108595760, 217191520]

約数ペア:

[(1, 217191520), (2, 108595760), (4, 54297880), (5, 43438304), (7, 31027360), (8, 27148940), (10, 21719152), (13, 16707040), (14, 15513680), (16, 13574470), (20, 10859576), (26, 8353520), (28, 7756840), (32, 6787235), (35, 6205472), (40, 5429788), (49, 4432480), (52, 4176760), (56, 3878420), (65, 3341408), (70, 3102736), (80, 2714894), (91, 2386720), (98, 2216240), (104, 2088380), (112, 1939210), (130, 1670704), (140, 1551368), (160, 1357447), (182, 1193360), (196, 1108120), (208, 1044190), (224, 969605), (245, 886496), (260, 835352), (280, 775684), (364, 596680), (392, 554060), (416, 522095), (455, 477344), (490, 443248), (520, 417676), (560, 387842), (637, 340960), (728, 298340), (784, 277030), (910, 238672), (980, 221624), (1040, 208838), (1120, 193921), (1274, 170480), (1456, 149170), (1568, 138515), (1820, 119336), (1960, 110812), (2080, 104419), (2131, 101920), (2548, 85240), (2912, 74585), (3185, 68192), (3640, 59668), (3920, 55406), (4262, 50960), (5096, 42620), (6370, 34096), (7280, 29834), (7840, 27703), (8524, 25480), (10192, 21310), (10655, 20384), (12740, 17048), (14560, 14917)]