81356000

素因数分解:

$2^5\times 5^3\times {\mathrm{11}}^1\times {\mathrm{43}}^2$

素因数の和:122

約数の個数: 144

約数和(自身を含む): 223252848

約数和(自身を除く): 141896848

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 32, 40, 43, 44, 50, 55, 80, 86, 88, 100, 110, 125, 160, 172, 176, 200, 215, 220, 250, 275, 344, 352, 400, 430, 440, 473, 500, 550, 688, 800, 860, 880, 946, 1000, 1075, 1100, 1375, 1376, 1720, 1760, 1849, 1892, 2000, 2150, 2200, 2365, 2750, 3440, 3698, 3784, 4000, 4300, 4400, 4730, 5375, 5500, 6880, 7396, 7568, 8600, 8800, 9245, 9460, 10750, 11000, 11825, 14792, 15136, 17200, 18490, 18920, 20339, 21500, 22000, 23650, 29584, 34400, 36980, 37840, 40678, 43000, 44000, 46225, 47300, 59125, 59168, 73960, 75680, 81356, 86000, 92450, 94600, 101695, 118250, 147920, 162712, 172000, 184900, 189200, 203390, 231125, 236500, 295840, 325424, 369800, 378400, 406780, 462250, 473000, 508475, 650848, 739600, 813560, 924500, 946000, 1016950, 1479200, 1627120, 1849000, 1892000, 2033900, 2542375, 3254240, 3698000, 4067800, 5084750, 7396000, 8135600, 10169500, 16271200, 20339000, 40678000, 81356000]

約数ペア:

[(1, 81356000), (2, 40678000), (4, 20339000), (5, 16271200), (8, 10169500), (10, 8135600), (11, 7396000), (16, 5084750), (20, 4067800), (22, 3698000), (25, 3254240), (32, 2542375), (40, 2033900), (43, 1892000), (44, 1849000), (50, 1627120), (55, 1479200), (80, 1016950), (86, 946000), (88, 924500), (100, 813560), (110, 739600), (125, 650848), (160, 508475), (172, 473000), (176, 462250), (200, 406780), (215, 378400), (220, 369800), (250, 325424), (275, 295840), (344, 236500), (352, 231125), (400, 203390), (430, 189200), (440, 184900), (473, 172000), (500, 162712), (550, 147920), (688, 118250), (800, 101695), (860, 94600), (880, 92450), (946, 86000), (1000, 81356), (1075, 75680), (1100, 73960), (1375, 59168), (1376, 59125), (1720, 47300), (1760, 46225), (1849, 44000), (1892, 43000), (2000, 40678), (2150, 37840), (2200, 36980), (2365, 34400), (2750, 29584), (3440, 23650), (3698, 22000), (3784, 21500), (4000, 20339), (4300, 18920), (4400, 18490), (4730, 17200), (5375, 15136), (5500, 14792), (6880, 11825), (7396, 11000), (7568, 10750), (8600, 9460), (8800, 9245)]