21240860

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{55897}}^1$

素因数の和:55925

約数の個数: 24

約数和(自身を含む): 46954320

約数和(自身を除く): 25713460

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 55897, 111794, 223588, 279485, 558970, 1062043, 1117940, 2124086, 4248172, 5310215, 10620430, 21240860]

約数ペア:

[(1, 21240860), (2, 10620430), (4, 5310215), (5, 4248172), (10, 2124086), (19, 1117940), (20, 1062043), (38, 558970), (76, 279485), (95, 223588), (190, 111794), (380, 55897)]