21274840

素因数分解:

$2^3\times 5^1\times {\mathrm{531871}}^1$

素因数の和:531882

約数の個数: 16

約数和(自身を含む): 47868480

約数和(自身を除く): 26593640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 531871, 1063742, 2127484, 2659355, 4254968, 5318710, 10637420, 21274840]

約数ペア:

[(1, 21274840), (2, 10637420), (4, 5318710), (5, 4254968), (8, 2659355), (10, 2127484), (20, 1063742), (40, 531871)]