21804530

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{198223}}^1$

素因数の和:198241

約数の個数: 16

約数和(自身を含む): 42816384

約数和(自身を除く): 21011854

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 198223, 396446, 991115, 1982230, 2180453, 4360906, 10902265, 21804530]

約数ペア:

[(1, 21804530), (2, 10902265), (5, 4360906), (10, 2180453), (11, 1982230), (22, 991115), (55, 396446), (110, 198223)]