21448340

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{56443}}^1$

素因数の和:56471

約数の個数: 24

約数和(自身を含む): 47412960

約数和(自身を除く): 25964620

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 56443, 112886, 225772, 282215, 564430, 1072417, 1128860, 2144834, 4289668, 5362085, 10724170, 21448340]

約数ペア:

[(1, 21448340), (2, 10724170), (4, 5362085), (5, 4289668), (10, 2144834), (19, 1128860), (20, 1072417), (38, 564430), (76, 282215), (95, 225772), (190, 112886), (380, 56443)]