81757760

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{113}}^1$

素因数の和:173

約数の個数: 224

約数和(自身を含む): 250179840

約数和(自身を除く): 168422080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 19, 20, 28, 32, 34, 35, 38, 40, 56, 64, 68, 70, 76, 80, 85, 95, 112, 113, 119, 133, 136, 140, 152, 160, 170, 190, 224, 226, 238, 266, 272, 280, 304, 320, 323, 340, 380, 448, 452, 476, 532, 544, 560, 565, 595, 608, 646, 665, 680, 760, 791, 904, 952, 1064, 1088, 1120, 1130, 1190, 1216, 1292, 1330, 1360, 1520, 1582, 1615, 1808, 1904, 1921, 2128, 2147, 2240, 2260, 2261, 2380, 2584, 2660, 2720, 3040, 3164, 3230, 3616, 3808, 3842, 3955, 4256, 4294, 4520, 4522, 4760, 5168, 5320, 5440, 6080, 6328, 6460, 7232, 7616, 7684, 7910, 8512, 8588, 9040, 9044, 9520, 9605, 10336, 10640, 10735, 11305, 12656, 12920, 13447, 15029, 15368, 15820, 17176, 18080, 18088, 19040, 19210, 20672, 21280, 21470, 22610, 25312, 25840, 26894, 30058, 30736, 31640, 34352, 36160, 36176, 36499, 38080, 38420, 42560, 42940, 45220, 50624, 51680, 53788, 60116, 61472, 63280, 67235, 68704, 72352, 72998, 75145, 76840, 85880, 90440, 103360, 107576, 120232, 122944, 126560, 134470, 137408, 144704, 145996, 150290, 153680, 171760, 180880, 182495, 215152, 240464, 253120, 255493, 268940, 291992, 300580, 307360, 343520, 361760, 364990, 430304, 480928, 510986, 537880, 583984, 601160, 614720, 687040, 723520, 729980, 860608, 961856, 1021972, 1075760, 1167968, 1202320, 1277465, 1459960, 2043944, 2151520, 2335936, 2404640, 2554930, 2919920, 4087888, 4303040, 4809280, 5109860, 5839840, 8175776, 10219720, 11679680, 16351552, 20439440, 40878880, 81757760]

約数ペア:

[(1, 81757760), (2, 40878880), (4, 20439440), (5, 16351552), (7, 11679680), (8, 10219720), (10, 8175776), (14, 5839840), (16, 5109860), (17, 4809280), (19, 4303040), (20, 4087888), (28, 2919920), (32, 2554930), (34, 2404640), (35, 2335936), (38, 2151520), (40, 2043944), (56, 1459960), (64, 1277465), (68, 1202320), (70, 1167968), (76, 1075760), (80, 1021972), (85, 961856), (95, 860608), (112, 729980), (113, 723520), (119, 687040), (133, 614720), (136, 601160), (140, 583984), (152, 537880), (160, 510986), (170, 480928), (190, 430304), (224, 364990), (226, 361760), (238, 343520), (266, 307360), (272, 300580), (280, 291992), (304, 268940), (320, 255493), (323, 253120), (340, 240464), (380, 215152), (448, 182495), (452, 180880), (476, 171760), (532, 153680), (544, 150290), (560, 145996), (565, 144704), (595, 137408), (608, 134470), (646, 126560), (665, 122944), (680, 120232), (760, 107576), (791, 103360), (904, 90440), (952, 85880), (1064, 76840), (1088, 75145), (1120, 72998), (1130, 72352), (1190, 68704), (1216, 67235), (1292, 63280), (1330, 61472), (1360, 60116), (1520, 53788), (1582, 51680), (1615, 50624), (1808, 45220), (1904, 42940), (1921, 42560), (2128, 38420), (2147, 38080), (2240, 36499), (2260, 36176), (2261, 36160), (2380, 34352), (2584, 31640), (2660, 30736), (2720, 30058), (3040, 26894), (3164, 25840), (3230, 25312), (3616, 22610), (3808, 21470), (3842, 21280), (3955, 20672), (4256, 19210), (4294, 19040), (4520, 18088), (4522, 18080), (4760, 17176), (5168, 15820), (5320, 15368), (5440, 15029), (6080, 13447), (6328, 12920), (6460, 12656), (7232, 11305), (7616, 10735), (7684, 10640), (7910, 10336), (8512, 9605), (8588, 9520), (9040, 9044)]