21304318

素因数分解:

$2^1\times 7^2\times {\mathrm{149}}^1\times {\mathrm{1459}}^1$

素因数の和:1624

約数の個数: 24

約数和(自身を含む): 37449000

約数和(自身を除く): 16144682

約数列:

[1, 2, 7, 14, 49, 98, 149, 298, 1043, 1459, 2086, 2918, 7301, 10213, 14602, 20426, 71491, 142982, 217391, 434782, 1521737, 3043474, 10652159, 21304318]

約数ペア:

[(1, 21304318), (2, 10652159), (7, 3043474), (14, 1521737), (49, 434782), (98, 217391), (149, 142982), (298, 71491), (1043, 20426), (1459, 14602), (2086, 10213), (2918, 7301)]