21020788

素因数分解:

$2^2\times {\mathrm{73}}^1\times {\mathrm{193}}^1\times {\mathrm{373}}^1$

素因数の和:643

約数の個数: 24

約数和(自身を含む): 37584008

約数和(自身を除く): 16563220

約数列:

[1, 2, 4, 73, 146, 193, 292, 373, 386, 746, 772, 1492, 14089, 27229, 28178, 54458, 56356, 71989, 108916, 143978, 287956, 5255197, 10510394, 21020788]

約数ペア:

[(1, 21020788), (2, 10510394), (4, 5255197), (73, 287956), (146, 143978), (193, 108916), (292, 71989), (373, 56356), (386, 54458), (746, 28178), (772, 27229), (1492, 14089)]