80921960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{107}}^1$

素因数の和:235

約数の個数: 128

約数和(自身を含む): 218661120

約数和(自身を除く): 137739160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 37, 40, 56, 70, 73, 74, 107, 140, 146, 148, 185, 214, 259, 280, 292, 296, 365, 370, 428, 511, 518, 535, 584, 730, 740, 749, 856, 1022, 1036, 1070, 1295, 1460, 1480, 1498, 2044, 2072, 2140, 2555, 2590, 2701, 2920, 2996, 3745, 3959, 4088, 4280, 5110, 5180, 5402, 5992, 7490, 7811, 7918, 10220, 10360, 10804, 13505, 14980, 15622, 15836, 18907, 19795, 20440, 21608, 27010, 27713, 29960, 31244, 31672, 37814, 39055, 39590, 54020, 54677, 55426, 62488, 75628, 78110, 79180, 94535, 108040, 109354, 110852, 138565, 151256, 156220, 158360, 189070, 218708, 221704, 273385, 277130, 289007, 312440, 378140, 437416, 546770, 554260, 578014, 756280, 1093540, 1108520, 1156028, 1445035, 2023049, 2187080, 2312056, 2890070, 4046098, 5780140, 8092196, 10115245, 11560280, 16184392, 20230490, 40460980, 80921960]

約数ペア:

[(1, 80921960), (2, 40460980), (4, 20230490), (5, 16184392), (7, 11560280), (8, 10115245), (10, 8092196), (14, 5780140), (20, 4046098), (28, 2890070), (35, 2312056), (37, 2187080), (40, 2023049), (56, 1445035), (70, 1156028), (73, 1108520), (74, 1093540), (107, 756280), (140, 578014), (146, 554260), (148, 546770), (185, 437416), (214, 378140), (259, 312440), (280, 289007), (292, 277130), (296, 273385), (365, 221704), (370, 218708), (428, 189070), (511, 158360), (518, 156220), (535, 151256), (584, 138565), (730, 110852), (740, 109354), (749, 108040), (856, 94535), (1022, 79180), (1036, 78110), (1070, 75628), (1295, 62488), (1460, 55426), (1480, 54677), (1498, 54020), (2044, 39590), (2072, 39055), (2140, 37814), (2555, 31672), (2590, 31244), (2701, 29960), (2920, 27713), (2996, 27010), (3745, 21608), (3959, 20440), (4088, 19795), (4280, 18907), (5110, 15836), (5180, 15622), (5402, 14980), (5992, 13505), (7490, 10804), (7811, 10360), (7918, 10220)]