16213640

素因数分解:

$2^3\times 5^1\times {\mathrm{405341}}^1$

素因数の和:405352

約数の個数: 16

約数和(自身を含む): 36480780

約数和(自身を除く): 20267140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 405341, 810682, 1621364, 2026705, 3242728, 4053410, 8106820, 16213640]

約数ペア:

[(1, 16213640), (2, 8106820), (4, 4053410), (5, 3242728), (8, 2026705), (10, 1621364), (20, 810682), (40, 405341)]