81144320

素因数分解:

$2^9\times 5^1\times {\mathrm{29}}^1\times {\mathrm{1093}}^1$

素因数の和:1145

約数の個数: 80

約数和(自身を含む): 201449160

約数和(自身を除く): 120304840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 64, 80, 116, 128, 145, 160, 232, 256, 290, 320, 464, 512, 580, 640, 928, 1093, 1160, 1280, 1856, 2186, 2320, 2560, 3712, 4372, 4640, 5465, 7424, 8744, 9280, 10930, 14848, 17488, 18560, 21860, 31697, 34976, 37120, 43720, 63394, 69952, 74240, 87440, 126788, 139904, 158485, 174880, 253576, 279808, 316970, 349760, 507152, 559616, 633940, 699520, 1014304, 1267880, 1399040, 2028608, 2535760, 2798080, 4057216, 5071520, 8114432, 10143040, 16228864, 20286080, 40572160, 81144320]

約数ペア:

[(1, 81144320), (2, 40572160), (4, 20286080), (5, 16228864), (8, 10143040), (10, 8114432), (16, 5071520), (20, 4057216), (29, 2798080), (32, 2535760), (40, 2028608), (58, 1399040), (64, 1267880), (80, 1014304), (116, 699520), (128, 633940), (145, 559616), (160, 507152), (232, 349760), (256, 316970), (290, 279808), (320, 253576), (464, 174880), (512, 158485), (580, 139904), (640, 126788), (928, 87440), (1093, 74240), (1160, 69952), (1280, 63394), (1856, 43720), (2186, 37120), (2320, 34976), (2560, 31697), (3712, 21860), (4372, 18560), (4640, 17488), (5465, 14848), (7424, 10930), (8744, 9280)]