21353820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{479}}^1\times {\mathrm{743}}^1$

素因数の和:1234

約数の個数: 48

約数和(自身を含む): 59996160

約数和(自身を除く): 38642340

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 479, 743, 958, 1437, 1486, 1916, 2229, 2395, 2874, 2972, 3715, 4458, 4790, 5748, 7185, 7430, 8916, 9580, 11145, 14370, 14860, 22290, 28740, 44580, 355897, 711794, 1067691, 1423588, 1779485, 2135382, 3558970, 4270764, 5338455, 7117940, 10676910, 21353820]

約数ペア:

[(1, 21353820), (2, 10676910), (3, 7117940), (4, 5338455), (5, 4270764), (6, 3558970), (10, 2135382), (12, 1779485), (15, 1423588), (20, 1067691), (30, 711794), (60, 355897), (479, 44580), (743, 28740), (958, 22290), (1437, 14860), (1486, 14370), (1916, 11145), (2229, 9580), (2395, 8916), (2874, 7430), (2972, 7185), (3715, 5748), (4458, 4790)]