81489660

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{251}}^1\times {\mathrm{773}}^1$

素因数の和:1043

約数の個数: 96

約数和(自身を含む): 262144512

約数和(自身を除く): 180654852

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 251, 420, 502, 753, 773, 1004, 1255, 1506, 1546, 1757, 2319, 2510, 3012, 3092, 3514, 3765, 3865, 4638, 5020, 5271, 5411, 7028, 7530, 7730, 8785, 9276, 10542, 10822, 11595, 15060, 15460, 16233, 17570, 21084, 21644, 23190, 26355, 27055, 32466, 35140, 46380, 52710, 54110, 64932, 81165, 105420, 108220, 162330, 194023, 324660, 388046, 582069, 776092, 970115, 1164138, 1358161, 1940230, 2328276, 2716322, 2910345, 3880460, 4074483, 5432644, 5820690, 6790805, 8148966, 11641380, 13581610, 16297932, 20372415, 27163220, 40744830, 81489660]

約数ペア:

[(1, 81489660), (2, 40744830), (3, 27163220), (4, 20372415), (5, 16297932), (6, 13581610), (7, 11641380), (10, 8148966), (12, 6790805), (14, 5820690), (15, 5432644), (20, 4074483), (21, 3880460), (28, 2910345), (30, 2716322), (35, 2328276), (42, 1940230), (60, 1358161), (70, 1164138), (84, 970115), (105, 776092), (140, 582069), (210, 388046), (251, 324660), (420, 194023), (502, 162330), (753, 108220), (773, 105420), (1004, 81165), (1255, 64932), (1506, 54110), (1546, 52710), (1757, 46380), (2319, 35140), (2510, 32466), (3012, 27055), (3092, 26355), (3514, 23190), (3765, 21644), (3865, 21084), (4638, 17570), (5020, 16233), (5271, 15460), (5411, 15060), (7028, 11595), (7530, 10822), (7730, 10542), (8785, 9276)]