399007040

素因数分解:

$2^6\times 5^1\times {\mathrm{577}}^1\times {\mathrm{2161}}^1$

素因数の和:2755

約数の個数: 56

約数和(自身を含む): 952222632

約数和(自身を除く): 553215592

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 577, 1154, 2161, 2308, 2885, 4322, 4616, 5770, 8644, 9232, 10805, 11540, 17288, 18464, 21610, 23080, 34576, 36928, 43220, 46160, 69152, 86440, 92320, 138304, 172880, 184640, 345760, 691520, 1246897, 2493794, 4987588, 6234485, 9975176, 12468970, 19950352, 24937940, 39900704, 49875880, 79801408, 99751760, 199503520, 399007040]

約数ペア:

[(1, 399007040), (2, 199503520), (4, 99751760), (5, 79801408), (8, 49875880), (10, 39900704), (16, 24937940), (20, 19950352), (32, 12468970), (40, 9975176), (64, 6234485), (80, 4987588), (160, 2493794), (320, 1246897), (577, 691520), (1154, 345760), (2161, 184640), (2308, 172880), (2885, 138304), (4322, 92320), (4616, 86440), (5770, 69152), (8644, 46160), (9232, 43220), (10805, 36928), (11540, 34576), (17288, 23080), (18464, 21610)]