256098640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{457319}}^1$

素因数の和:457339

約数の個数: 40

約数和(自身を含む): 680492160

約数和(自身を除く): 424393520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 457319, 914638, 1829276, 2286595, 3201233, 3658552, 4573190, 6402466, 7317104, 9146380, 12804932, 16006165, 18292760, 25609864, 32012330, 36585520, 51219728, 64024660, 128049320, 256098640]

約数ペア:

[(1, 256098640), (2, 128049320), (4, 64024660), (5, 51219728), (7, 36585520), (8, 32012330), (10, 25609864), (14, 18292760), (16, 16006165), (20, 12804932), (28, 9146380), (35, 7317104), (40, 6402466), (56, 4573190), (70, 3658552), (80, 3201233), (112, 2286595), (140, 1829276), (280, 914638), (560, 457319)]