80778880

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1$

素因数の和:131

約数の個数: 256

約数和(自身を含む): 253612800

約数和(自身を除く): 172833920

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 19, 20, 26, 28, 32, 35, 38, 40, 52, 56, 64, 65, 70, 73, 76, 80, 91, 95, 104, 112, 128, 130, 133, 140, 146, 152, 160, 182, 190, 208, 224, 247, 260, 266, 280, 292, 304, 320, 364, 365, 380, 416, 448, 455, 494, 511, 520, 532, 560, 584, 608, 640, 665, 728, 730, 760, 832, 896, 910, 949, 988, 1022, 1040, 1064, 1120, 1168, 1216, 1235, 1330, 1387, 1456, 1460, 1520, 1664, 1729, 1820, 1898, 1976, 2044, 2080, 2128, 2240, 2336, 2432, 2470, 2555, 2660, 2774, 2912, 2920, 3040, 3458, 3640, 3796, 3952, 4088, 4160, 4256, 4480, 4672, 4745, 4940, 5110, 5320, 5548, 5824, 5840, 6080, 6643, 6916, 6935, 7280, 7592, 7904, 8176, 8320, 8512, 8645, 9344, 9490, 9709, 9880, 10220, 10640, 11096, 11648, 11680, 12160, 13286, 13832, 13870, 14560, 15184, 15808, 16352, 17024, 17290, 18031, 18980, 19418, 19760, 20440, 21280, 22192, 23360, 26572, 27664, 27740, 29120, 30368, 31616, 32704, 33215, 34580, 36062, 37960, 38836, 39520, 40880, 42560, 44384, 46720, 48545, 53144, 55328, 55480, 58240, 60736, 65408, 66430, 69160, 72124, 75920, 77672, 79040, 81760, 85120, 88768, 90155, 97090, 106288, 110656, 110960, 121472, 126217, 132860, 138320, 144248, 151840, 155344, 158080, 163520, 177536, 180310, 194180, 212576, 221312, 221920, 252434, 265720, 276640, 288496, 303680, 310688, 327040, 360620, 388360, 425152, 443840, 504868, 531440, 553280, 576992, 607360, 621376, 631085, 721240, 776720, 850304, 887680, 1009736, 1062880, 1106560, 1153984, 1242752, 1262170, 1442480, 1553440, 2019472, 2125760, 2307968, 2524340, 2884960, 3106880, 4038944, 4251520, 5048680, 5769920, 6213760, 8077888, 10097360, 11539840, 16155776, 20194720, 40389440, 80778880]

約数ペア:

[(1, 80778880), (2, 40389440), (4, 20194720), (5, 16155776), (7, 11539840), (8, 10097360), (10, 8077888), (13, 6213760), (14, 5769920), (16, 5048680), (19, 4251520), (20, 4038944), (26, 3106880), (28, 2884960), (32, 2524340), (35, 2307968), (38, 2125760), (40, 2019472), (52, 1553440), (56, 1442480), (64, 1262170), (65, 1242752), (70, 1153984), (73, 1106560), (76, 1062880), (80, 1009736), (91, 887680), (95, 850304), (104, 776720), (112, 721240), (128, 631085), (130, 621376), (133, 607360), (140, 576992), (146, 553280), (152, 531440), (160, 504868), (182, 443840), (190, 425152), (208, 388360), (224, 360620), (247, 327040), (260, 310688), (266, 303680), (280, 288496), (292, 276640), (304, 265720), (320, 252434), (364, 221920), (365, 221312), (380, 212576), (416, 194180), (448, 180310), (455, 177536), (494, 163520), (511, 158080), (520, 155344), (532, 151840), (560, 144248), (584, 138320), (608, 132860), (640, 126217), (665, 121472), (728, 110960), (730, 110656), (760, 106288), (832, 97090), (896, 90155), (910, 88768), (949, 85120), (988, 81760), (1022, 79040), (1040, 77672), (1064, 75920), (1120, 72124), (1168, 69160), (1216, 66430), (1235, 65408), (1330, 60736), (1387, 58240), (1456, 55480), (1460, 55328), (1520, 53144), (1664, 48545), (1729, 46720), (1820, 44384), (1898, 42560), (1976, 40880), (2044, 39520), (2080, 38836), (2128, 37960), (2240, 36062), (2336, 34580), (2432, 33215), (2470, 32704), (2555, 31616), (2660, 30368), (2774, 29120), (2912, 27740), (2920, 27664), (3040, 26572), (3458, 23360), (3640, 22192), (3796, 21280), (3952, 20440), (4088, 19760), (4160, 19418), (4256, 18980), (4480, 18031), (4672, 17290), (4745, 17024), (4940, 16352), (5110, 15808), (5320, 15184), (5548, 14560), (5824, 13870), (5840, 13832), (6080, 13286), (6643, 12160), (6916, 11680), (6935, 11648), (7280, 11096), (7592, 10640), (7904, 10220), (8176, 9880), (8320, 9709), (8512, 9490), (8645, 9344)]