21905144

素因数分解:

$2^3\times {\mathrm{431}}^1\times {\mathrm{6353}}^1$

素因数の和:6790

約数の個数: 16

約数和(自身を含む): 41173920

約数和(自身を除く): 19268776

約数列:

[1, 2, 4, 8, 431, 862, 1724, 3448, 6353, 12706, 25412, 50824, 2738143, 5476286, 10952572, 21905144]

約数ペア:

[(1, 21905144), (2, 10952572), (4, 5476286), (8, 2738143), (431, 50824), (862, 25412), (1724, 12706), (3448, 6353)]