21057464

素因数分解:

$2^3\times {\mathrm{71}}^1\times {\mathrm{131}}^1\times {\mathrm{283}}^1$

素因数の和:491

約数の個数: 32

約数和(自身を含む): 40487040

約数和(自身を除く): 19429576

約数列:

[1, 2, 4, 8, 71, 131, 142, 262, 283, 284, 524, 566, 568, 1048, 1132, 2264, 9301, 18602, 20093, 37073, 37204, 40186, 74146, 74408, 80372, 148292, 160744, 296584, 2632183, 5264366, 10528732, 21057464]

約数ペア:

[(1, 21057464), (2, 10528732), (4, 5264366), (8, 2632183), (71, 296584), (131, 160744), (142, 148292), (262, 80372), (283, 74408), (284, 74146), (524, 40186), (566, 37204), (568, 37073), (1048, 20093), (1132, 18602), (2264, 9301)]