81574640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{127}}^1$

素因数の和:215

約数の個数: 160

約数和(自身を含む): 231604224

約数和(自身を除く): 150029584

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 35, 37, 40, 56, 62, 70, 74, 80, 112, 124, 127, 140, 148, 155, 185, 217, 248, 254, 259, 280, 296, 310, 370, 434, 496, 508, 518, 560, 592, 620, 635, 740, 868, 889, 1016, 1036, 1085, 1147, 1240, 1270, 1295, 1480, 1736, 1778, 2032, 2072, 2170, 2294, 2480, 2540, 2590, 2960, 3472, 3556, 3937, 4144, 4340, 4445, 4588, 4699, 5080, 5180, 5735, 7112, 7874, 8029, 8680, 8890, 9176, 9398, 10160, 10360, 11470, 14224, 15748, 16058, 17360, 17780, 18352, 18796, 19685, 20720, 22940, 23495, 27559, 31496, 32116, 32893, 35560, 37592, 39370, 40145, 45880, 46990, 55118, 62992, 64232, 65786, 71120, 75184, 78740, 80290, 91760, 93980, 110236, 128464, 131572, 137795, 145669, 157480, 160580, 164465, 187960, 220472, 263144, 275590, 291338, 314960, 321160, 328930, 375920, 440944, 526288, 551180, 582676, 642320, 657860, 728345, 1019683, 1102360, 1165352, 1315720, 1456690, 2039366, 2204720, 2330704, 2631440, 2913380, 4078732, 5098415, 5826760, 8157464, 10196830, 11653520, 16314928, 20393660, 40787320, 81574640]

約数ペア:

[(1, 81574640), (2, 40787320), (4, 20393660), (5, 16314928), (7, 11653520), (8, 10196830), (10, 8157464), (14, 5826760), (16, 5098415), (20, 4078732), (28, 2913380), (31, 2631440), (35, 2330704), (37, 2204720), (40, 2039366), (56, 1456690), (62, 1315720), (70, 1165352), (74, 1102360), (80, 1019683), (112, 728345), (124, 657860), (127, 642320), (140, 582676), (148, 551180), (155, 526288), (185, 440944), (217, 375920), (248, 328930), (254, 321160), (259, 314960), (280, 291338), (296, 275590), (310, 263144), (370, 220472), (434, 187960), (496, 164465), (508, 160580), (518, 157480), (560, 145669), (592, 137795), (620, 131572), (635, 128464), (740, 110236), (868, 93980), (889, 91760), (1016, 80290), (1036, 78740), (1085, 75184), (1147, 71120), (1240, 65786), (1270, 64232), (1295, 62992), (1480, 55118), (1736, 46990), (1778, 45880), (2032, 40145), (2072, 39370), (2170, 37592), (2294, 35560), (2480, 32893), (2540, 32116), (2590, 31496), (2960, 27559), (3472, 23495), (3556, 22940), (3937, 20720), (4144, 19685), (4340, 18796), (4445, 18352), (4588, 17780), (4699, 17360), (5080, 16058), (5180, 15748), (5735, 14224), (7112, 11470), (7874, 10360), (8029, 10160), (8680, 9398), (8890, 9176)]