21382970

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{305471}}^1$

素因数の和:305485

約数の個数: 16

約数和(自身を含む): 43987968

約数和(自身を除く): 22604998

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 305471, 610942, 1527355, 2138297, 3054710, 4276594, 10691485, 21382970]

約数ペア:

[(1, 21382970), (2, 10691485), (5, 4276594), (7, 3054710), (10, 2138297), (14, 1527355), (35, 610942), (70, 305471)]