81128320

素因数分解:

$2^7\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{199}}^1$

素因数の和:245

約数の個数: 192

約数和(自身を含む): 244188000

約数和(自身を除く): 163059680

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 49, 52, 56, 64, 65, 70, 80, 91, 98, 104, 112, 128, 130, 140, 160, 182, 196, 199, 208, 224, 245, 260, 280, 320, 364, 392, 398, 416, 448, 455, 490, 520, 560, 637, 640, 728, 784, 796, 832, 896, 910, 980, 995, 1040, 1120, 1274, 1393, 1456, 1568, 1592, 1664, 1820, 1960, 1990, 2080, 2240, 2548, 2587, 2786, 2912, 3136, 3184, 3185, 3640, 3920, 3980, 4160, 4480, 5096, 5174, 5572, 5824, 6272, 6368, 6370, 6965, 7280, 7840, 7960, 8320, 9751, 10192, 10348, 11144, 11648, 12736, 12740, 12935, 13930, 14560, 15680, 15920, 18109, 19502, 20384, 20696, 22288, 25472, 25480, 25870, 27860, 29120, 31360, 31840, 36218, 39004, 40768, 41392, 44576, 48755, 50960, 51740, 55720, 58240, 63680, 72436, 78008, 81536, 82784, 89152, 90545, 97510, 101920, 103480, 111440, 126763, 127360, 144872, 156016, 165568, 178304, 181090, 195020, 203840, 206960, 222880, 253526, 289744, 312032, 331136, 362180, 390040, 407680, 413920, 445760, 507052, 579488, 624064, 633815, 724360, 780080, 827840, 891520, 1014104, 1158976, 1248128, 1267630, 1448720, 1560160, 1655680, 2028208, 2317952, 2535260, 2897440, 3120320, 4056416, 5070520, 5794880, 6240640, 8112832, 10141040, 11589760, 16225664, 20282080, 40564160, 81128320]

約数ペア:

[(1, 81128320), (2, 40564160), (4, 20282080), (5, 16225664), (7, 11589760), (8, 10141040), (10, 8112832), (13, 6240640), (14, 5794880), (16, 5070520), (20, 4056416), (26, 3120320), (28, 2897440), (32, 2535260), (35, 2317952), (40, 2028208), (49, 1655680), (52, 1560160), (56, 1448720), (64, 1267630), (65, 1248128), (70, 1158976), (80, 1014104), (91, 891520), (98, 827840), (104, 780080), (112, 724360), (128, 633815), (130, 624064), (140, 579488), (160, 507052), (182, 445760), (196, 413920), (199, 407680), (208, 390040), (224, 362180), (245, 331136), (260, 312032), (280, 289744), (320, 253526), (364, 222880), (392, 206960), (398, 203840), (416, 195020), (448, 181090), (455, 178304), (490, 165568), (520, 156016), (560, 144872), (637, 127360), (640, 126763), (728, 111440), (784, 103480), (796, 101920), (832, 97510), (896, 90545), (910, 89152), (980, 82784), (995, 81536), (1040, 78008), (1120, 72436), (1274, 63680), (1393, 58240), (1456, 55720), (1568, 51740), (1592, 50960), (1664, 48755), (1820, 44576), (1960, 41392), (1990, 40768), (2080, 39004), (2240, 36218), (2548, 31840), (2587, 31360), (2786, 29120), (2912, 27860), (3136, 25870), (3184, 25480), (3185, 25472), (3640, 22288), (3920, 20696), (3980, 20384), (4160, 19502), (4480, 18109), (5096, 15920), (5174, 15680), (5572, 14560), (5824, 13930), (6272, 12935), (6368, 12740), (6370, 12736), (6965, 11648), (7280, 11144), (7840, 10348), (7960, 10192), (8320, 9751)]